640890900

素因数分解:

$2^2\times 3^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2$

素因数の和:117

約数の個数: 432

約数和(自身を含む): 2413387200

約数和(自身を除く): 1772496300

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 19, 20, 25, 26, 27, 30, 31, 36, 38, 39, 45, 50, 52, 54, 57, 60, 62, 65, 75, 76, 78, 90, 93, 95, 100, 108, 114, 117, 124, 130, 135, 150, 155, 156, 171, 180, 186, 190, 195, 225, 228, 234, 247, 260, 270, 279, 285, 300, 310, 325, 342, 351, 372, 380, 390, 403, 450, 465, 468, 475, 494, 513, 540, 558, 570, 585, 589, 620, 650, 675, 684, 702, 741, 775, 780, 806, 837, 855, 900, 930, 950, 961, 975, 988, 1026, 1116, 1140, 1170, 1178, 1209, 1235, 1300, 1350, 1395, 1404, 1425, 1482, 1550, 1612, 1674, 1710, 1755, 1767, 1860, 1900, 1922, 1950, 2015, 2052, 2223, 2325, 2340, 2356, 2418, 2470, 2565, 2700, 2790, 2850, 2883, 2925, 2945, 2964, 3100, 3348, 3420, 3510, 3534, 3627, 3705, 3844, 3900, 4030, 4185, 4275, 4446, 4650, 4805, 4836, 4940, 5130, 5301, 5580, 5700, 5766, 5850, 5890, 6045, 6175, 6669, 6975, 7020, 7068, 7254, 7410, 7657, 8060, 8370, 8550, 8649, 8775, 8835, 8892, 9300, 9610, 10075, 10260, 10602, 10881, 11115, 11532, 11700, 11780, 12090, 12350, 12493, 12825, 13338, 13950, 14415, 14508, 14725, 14820, 15314, 15903, 16740, 17100, 17298, 17550, 17670, 18135, 18259, 18525, 19220, 20150, 20925, 21204, 21762, 22230, 22971, 24025, 24180, 24700, 24986, 25650, 25947, 26505, 26676, 27900, 28830, 29450, 30225, 30628, 31806, 33345, 34596, 35100, 35340, 36270, 36518, 37050, 37479, 38285, 40300, 41850, 43245, 43524, 44175, 44460, 45942, 48050, 49972, 51300, 51894, 53010, 54405, 54777, 55575, 57660, 58900, 60450, 62465, 63612, 66690, 68913, 72075, 72540, 73036, 74100, 74958, 76570, 79515, 83700, 86490, 88350, 90675, 91295, 91884, 96100, 103788, 106020, 108810, 109554, 111150, 112437, 114855, 120900, 124930, 129735, 132525, 133380, 137826, 144150, 149916, 153140, 159030, 164331, 166725, 172980, 176700, 181350, 182590, 187395, 191425, 206739, 216225, 217620, 219108, 222300, 224874, 229710, 237367, 249860, 259470, 265050, 272025, 273885, 275652, 288300, 312325, 318060, 328662, 333450, 337311, 344565, 362700, 365180, 374790, 382850, 397575, 413478, 432450, 449748, 456475, 459420, 474734, 492993, 518940, 530100, 544050, 547770, 562185, 574275, 624650, 648675, 657324, 666900, 674622, 689130, 712101, 749580, 765700, 795150, 821655, 826956, 864900, 912950, 936975, 949468, 985986, 1033695, 1088100, 1095540, 1124370, 1148550, 1186835, 1249300, 1297350, 1349244, 1369425, 1378260, 1424202, 1590300, 1643310, 1686555, 1722825, 1825900, 1873950, 1971972, 2067390, 2136303, 2248740, 2297100, 2373670, 2464965, 2594700, 2738850, 2810925, 2848404, 3286620, 3373110, 3445650, 3560505, 3747900, 4108275, 4134780, 4272606, 4747340, 4929930, 5168475, 5477700, 5621850, 5934175, 6408909, 6746220, 6891300, 7121010, 8216550, 8432775, 8545212, 9859860, 10336950, 10681515, 11243700, 11868350, 12324825, 12817818, 14242020, 16433100, 16865550, 17802525, 20673900, 21363030, 23736700, 24649650, 25635636, 32044545, 33731100, 35605050, 42726060, 49299300, 53407575, 64089090, 71210100, 106815150, 128178180, 160222725, 213630300, 320445450, 640890900]

約数ペア:

[(1, 640890900), (2, 320445450), (3, 213630300), (4, 160222725), (5, 128178180), (6, 106815150), (9, 71210100), (10, 64089090), (12, 53407575), (13, 49299300), (15, 42726060), (18, 35605050), (19, 33731100), (20, 32044545), (25, 25635636), (26, 24649650), (27, 23736700), (30, 21363030), (31, 20673900), (36, 17802525), (38, 16865550), (39, 16433100), (45, 14242020), (50, 12817818), (52, 12324825), (54, 11868350), (57, 11243700), (60, 10681515), (62, 10336950), (65, 9859860), (75, 8545212), (76, 8432775), (78, 8216550), (90, 7121010), (93, 6891300), (95, 6746220), (100, 6408909), (108, 5934175), (114, 5621850), (117, 5477700), (124, 5168475), (130, 4929930), (135, 4747340), (150, 4272606), (155, 4134780), (156, 4108275), (171, 3747900), (180, 3560505), (186, 3445650), (190, 3373110), (195, 3286620), (225, 2848404), (228, 2810925), (234, 2738850), (247, 2594700), (260, 2464965), (270, 2373670), (279, 2297100), (285, 2248740), (300, 2136303), (310, 2067390), (325, 1971972), (342, 1873950), (351, 1825900), (372, 1722825), (380, 1686555), (390, 1643310), (403, 1590300), (450, 1424202), (465, 1378260), (468, 1369425), (475, 1349244), (494, 1297350), (513, 1249300), (540, 1186835), (558, 1148550), (570, 1124370), (585, 1095540), (589, 1088100), (620, 1033695), (650, 985986), (675, 949468), (684, 936975), (702, 912950), (741, 864900), (775, 826956), (780, 821655), (806, 795150), (837, 765700), (855, 749580), (900, 712101), (930, 689130), (950, 674622), (961, 666900), (975, 657324), (988, 648675), (1026, 624650), (1116, 574275), (1140, 562185), (1170, 547770), (1178, 544050), (1209, 530100), (1235, 518940), (1300, 492993), (1350, 474734), (1395, 459420), (1404, 456475), (1425, 449748), (1482, 432450), (1550, 413478), (1612, 397575), (1674, 382850), (1710, 374790), (1755, 365180), (1767, 362700), (1860, 344565), (1900, 337311), (1922, 333450), (1950, 328662), (2015, 318060), (2052, 312325), (2223, 288300), (2325, 275652), (2340, 273885), (2356, 272025), (2418, 265050), (2470, 259470), (2565, 249860), (2700, 237367), (2790, 229710), (2850, 224874), (2883, 222300), (2925, 219108), (2945, 217620), (2964, 216225), (3100, 206739), (3348, 191425), (3420, 187395), (3510, 182590), (3534, 181350), (3627, 176700), (3705, 172980), (3844, 166725), (3900, 164331), (4030, 159030), (4185, 153140), (4275, 149916), (4446, 144150), (4650, 137826), (4805, 133380), (4836, 132525), (4940, 129735), (5130, 124930), (5301, 120900), (5580, 114855), (5700, 112437), (5766, 111150), (5850, 109554), (5890, 108810), (6045, 106020), (6175, 103788), (6669, 96100), (6975, 91884), (7020, 91295), (7068, 90675), (7254, 88350), (7410, 86490), (7657, 83700), (8060, 79515), (8370, 76570), (8550, 74958), (8649, 74100), (8775, 73036), (8835, 72540), (8892, 72075), (9300, 68913), (9610, 66690), (10075, 63612), (10260, 62465), (10602, 60450), (10881, 58900), (11115, 57660), (11532, 55575), (11700, 54777), (11780, 54405), (12090, 53010), (12350, 51894), (12493, 51300), (12825, 49972), (13338, 48050), (13950, 45942), (14415, 44460), (14508, 44175), (14725, 43524), (14820, 43245), (15314, 41850), (15903, 40300), (16740, 38285), (17100, 37479), (17298, 37050), (17550, 36518), (17670, 36270), (18135, 35340), (18259, 35100), (18525, 34596), (19220, 33345), (20150, 31806), (20925, 30628), (21204, 30225), (21762, 29450), (22230, 28830), (22971, 27900), (24025, 26676), (24180, 26505), (24700, 25947), (24986, 25650)]