257345880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1$

素因数の和:406

約数の個数: 256

約数和(自身を含む): 917913600

約数和(自身を除く): 660567720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 19, 20, 22, 24, 30, 31, 33, 38, 40, 44, 55, 57, 60, 62, 66, 76, 88, 93, 95, 110, 114, 120, 124, 132, 152, 155, 165, 186, 190, 209, 220, 228, 248, 264, 285, 310, 330, 331, 341, 372, 380, 418, 440, 456, 465, 570, 589, 620, 627, 660, 662, 682, 744, 760, 836, 930, 993, 1023, 1045, 1140, 1178, 1240, 1254, 1320, 1324, 1364, 1655, 1672, 1705, 1767, 1860, 1986, 2046, 2090, 2280, 2356, 2508, 2648, 2728, 2945, 3135, 3310, 3410, 3534, 3641, 3720, 3972, 4092, 4180, 4712, 4965, 5016, 5115, 5890, 6270, 6289, 6479, 6620, 6820, 7068, 7282, 7944, 8184, 8360, 8835, 9930, 10230, 10261, 10923, 11780, 12540, 12578, 12958, 13240, 13640, 14136, 14564, 17670, 18205, 18867, 19437, 19860, 20460, 20522, 21846, 23560, 25080, 25156, 25916, 29128, 30783, 31445, 32395, 35340, 36410, 37734, 38874, 39720, 40920, 41044, 43692, 50312, 51305, 51832, 54615, 61566, 62890, 64790, 69179, 70680, 72820, 75468, 77748, 82088, 87384, 94335, 97185, 102610, 109230, 112871, 123132, 125780, 129580, 138358, 145640, 150936, 153915, 155496, 188670, 194370, 194959, 205220, 207537, 218460, 225742, 246264, 251560, 259160, 276716, 307830, 338613, 345895, 377340, 388740, 389918, 410440, 415074, 436920, 451484, 553432, 564355, 584877, 615660, 677226, 691790, 754680, 777480, 779836, 830148, 902968, 974795, 1037685, 1128710, 1169754, 1231320, 1354452, 1383580, 1559672, 1660296, 1693065, 1949590, 2075370, 2144549, 2257420, 2339508, 2708904, 2767160, 2924385, 3386130, 3899180, 4150740, 4289098, 4514840, 4679016, 5848770, 6433647, 6772260, 7798360, 8301480, 8578196, 10722745, 11697540, 12867294, 13544520, 17156392, 21445490, 23395080, 25734588, 32168235, 42890980, 51469176, 64336470, 85781960, 128672940, 257345880]

約数ペア:

[(1, 257345880), (2, 128672940), (3, 85781960), (4, 64336470), (5, 51469176), (6, 42890980), (8, 32168235), (10, 25734588), (11, 23395080), (12, 21445490), (15, 17156392), (19, 13544520), (20, 12867294), (22, 11697540), (24, 10722745), (30, 8578196), (31, 8301480), (33, 7798360), (38, 6772260), (40, 6433647), (44, 5848770), (55, 4679016), (57, 4514840), (60, 4289098), (62, 4150740), (66, 3899180), (76, 3386130), (88, 2924385), (93, 2767160), (95, 2708904), (110, 2339508), (114, 2257420), (120, 2144549), (124, 2075370), (132, 1949590), (152, 1693065), (155, 1660296), (165, 1559672), (186, 1383580), (190, 1354452), (209, 1231320), (220, 1169754), (228, 1128710), (248, 1037685), (264, 974795), (285, 902968), (310, 830148), (330, 779836), (331, 777480), (341, 754680), (372, 691790), (380, 677226), (418, 615660), (440, 584877), (456, 564355), (465, 553432), (570, 451484), (589, 436920), (620, 415074), (627, 410440), (660, 389918), (662, 388740), (682, 377340), (744, 345895), (760, 338613), (836, 307830), (930, 276716), (993, 259160), (1023, 251560), (1045, 246264), (1140, 225742), (1178, 218460), (1240, 207537), (1254, 205220), (1320, 194959), (1324, 194370), (1364, 188670), (1655, 155496), (1672, 153915), (1705, 150936), (1767, 145640), (1860, 138358), (1986, 129580), (2046, 125780), (2090, 123132), (2280, 112871), (2356, 109230), (2508, 102610), (2648, 97185), (2728, 94335), (2945, 87384), (3135, 82088), (3310, 77748), (3410, 75468), (3534, 72820), (3641, 70680), (3720, 69179), (3972, 64790), (4092, 62890), (4180, 61566), (4712, 54615), (4965, 51832), (5016, 51305), (5115, 50312), (5890, 43692), (6270, 41044), (6289, 40920), (6479, 39720), (6620, 38874), (6820, 37734), (7068, 36410), (7282, 35340), (7944, 32395), (8184, 31445), (8360, 30783), (8835, 29128), (9930, 25916), (10230, 25156), (10261, 25080), (10923, 23560), (11780, 21846), (12540, 20522), (12578, 20460), (12958, 19860), (13240, 19437), (13640, 18867), (14136, 18205), (14564, 17670)]