18787860

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:103

約数の個数: 288

約数和(自身を含む): 74360832

約数和(自身を除く): 55572972

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 31, 35, 36, 37, 39, 42, 45, 52, 60, 62, 63, 65, 70, 74, 78, 84, 90, 91, 93, 105, 111, 117, 124, 126, 130, 140, 148, 155, 156, 180, 182, 185, 186, 195, 210, 217, 222, 234, 252, 259, 260, 273, 279, 310, 315, 333, 364, 370, 372, 390, 403, 420, 434, 444, 455, 465, 468, 481, 518, 546, 555, 558, 585, 620, 630, 651, 666, 740, 777, 780, 806, 819, 868, 910, 930, 962, 1036, 1085, 1092, 1110, 1116, 1147, 1170, 1209, 1260, 1295, 1302, 1332, 1365, 1395, 1443, 1554, 1612, 1638, 1665, 1820, 1860, 1924, 1953, 2015, 2170, 2220, 2294, 2331, 2340, 2405, 2418, 2590, 2604, 2730, 2790, 2821, 2886, 3108, 3255, 3276, 3330, 3367, 3441, 3627, 3885, 3906, 4030, 4095, 4329, 4340, 4588, 4662, 4810, 4836, 5180, 5460, 5580, 5642, 5735, 5772, 6045, 6510, 6660, 6734, 6882, 7215, 7254, 7770, 7812, 8029, 8060, 8190, 8463, 8658, 9324, 9620, 9765, 10101, 10323, 11284, 11470, 11655, 12090, 13020, 13468, 13764, 14105, 14430, 14508, 14911, 15540, 16058, 16380, 16835, 16926, 17205, 17316, 18135, 19530, 20202, 20646, 21645, 22940, 23310, 24087, 24180, 25389, 28210, 28860, 29822, 30303, 32116, 33670, 33852, 34410, 36270, 39060, 40145, 40404, 41292, 42315, 43290, 44733, 46620, 48174, 50505, 50778, 51615, 56420, 59644, 60606, 67340, 68820, 72261, 72540, 74555, 80290, 84630, 86580, 89466, 96348, 101010, 101556, 103230, 104377, 120435, 121212, 126945, 134199, 144522, 149110, 151515, 160580, 169260, 178932, 202020, 206460, 208754, 223665, 240870, 253890, 268398, 289044, 298220, 303030, 313131, 361305, 417508, 447330, 481740, 507780, 521885, 536796, 606060, 626262, 670995, 722610, 894660, 939393, 1043770, 1252524, 1341990, 1445220, 1565655, 1878786, 2087540, 2683980, 3131310, 3757572, 4696965, 6262620, 9393930, 18787860]

約数ペア:

[(1, 18787860), (2, 9393930), (3, 6262620), (4, 4696965), (5, 3757572), (6, 3131310), (7, 2683980), (9, 2087540), (10, 1878786), (12, 1565655), (13, 1445220), (14, 1341990), (15, 1252524), (18, 1043770), (20, 939393), (21, 894660), (26, 722610), (28, 670995), (30, 626262), (31, 606060), (35, 536796), (36, 521885), (37, 507780), (39, 481740), (42, 447330), (45, 417508), (52, 361305), (60, 313131), (62, 303030), (63, 298220), (65, 289044), (70, 268398), (74, 253890), (78, 240870), (84, 223665), (90, 208754), (91, 206460), (93, 202020), (105, 178932), (111, 169260), (117, 160580), (124, 151515), (126, 149110), (130, 144522), (140, 134199), (148, 126945), (155, 121212), (156, 120435), (180, 104377), (182, 103230), (185, 101556), (186, 101010), (195, 96348), (210, 89466), (217, 86580), (222, 84630), (234, 80290), (252, 74555), (259, 72540), (260, 72261), (273, 68820), (279, 67340), (310, 60606), (315, 59644), (333, 56420), (364, 51615), (370, 50778), (372, 50505), (390, 48174), (403, 46620), (420, 44733), (434, 43290), (444, 42315), (455, 41292), (465, 40404), (468, 40145), (481, 39060), (518, 36270), (546, 34410), (555, 33852), (558, 33670), (585, 32116), (620, 30303), (630, 29822), (651, 28860), (666, 28210), (740, 25389), (777, 24180), (780, 24087), (806, 23310), (819, 22940), (868, 21645), (910, 20646), (930, 20202), (962, 19530), (1036, 18135), (1085, 17316), (1092, 17205), (1110, 16926), (1116, 16835), (1147, 16380), (1170, 16058), (1209, 15540), (1260, 14911), (1295, 14508), (1302, 14430), (1332, 14105), (1365, 13764), (1395, 13468), (1443, 13020), (1554, 12090), (1612, 11655), (1638, 11470), (1665, 11284), (1820, 10323), (1860, 10101), (1924, 9765), (1953, 9620), (2015, 9324), (2170, 8658), (2220, 8463), (2294, 8190), (2331, 8060), (2340, 8029), (2405, 7812), (2418, 7770), (2590, 7254), (2604, 7215), (2730, 6882), (2790, 6734), (2821, 6660), (2886, 6510), (3108, 6045), (3255, 5772), (3276, 5735), (3330, 5642), (3367, 5580), (3441, 5460), (3627, 5180), (3885, 4836), (3906, 4810), (4030, 4662), (4095, 4588), (4329, 4340)]