123878480

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:313

約数の個数: 160

約数和(自身を含む): 342835200

約数和(自身を除く): 218956720

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 31, 38, 40, 44, 55, 62, 76, 80, 88, 95, 110, 124, 152, 155, 176, 190, 209, 220, 239, 248, 304, 310, 341, 380, 418, 440, 478, 496, 589, 620, 682, 760, 836, 880, 956, 1045, 1178, 1195, 1240, 1364, 1520, 1672, 1705, 1912, 2090, 2356, 2390, 2480, 2629, 2728, 2945, 3344, 3410, 3824, 4180, 4541, 4712, 4780, 5258, 5456, 5890, 6479, 6820, 7409, 8360, 9082, 9424, 9560, 10516, 11780, 12958, 13145, 13640, 14818, 16720, 18164, 19120, 21032, 22705, 23560, 25916, 26290, 27280, 29636, 32395, 36328, 37045, 42064, 45410, 47120, 49951, 51832, 52580, 59272, 64790, 72656, 74090, 81499, 90820, 99902, 103664, 105160, 118544, 129580, 140771, 148180, 162998, 181640, 199804, 210320, 249755, 259160, 281542, 296360, 325996, 363280, 399608, 407495, 499510, 518320, 563084, 592720, 651992, 703855, 799216, 814990, 999020, 1126168, 1303984, 1407710, 1548481, 1629980, 1998040, 2252336, 2815420, 3096962, 3259960, 3996080, 5630840, 6193924, 6519920, 7742405, 11261680, 12387848, 15484810, 24775696, 30969620, 61939240, 123878480]

約数ペア:

[(1, 123878480), (2, 61939240), (4, 30969620), (5, 24775696), (8, 15484810), (10, 12387848), (11, 11261680), (16, 7742405), (19, 6519920), (20, 6193924), (22, 5630840), (31, 3996080), (38, 3259960), (40, 3096962), (44, 2815420), (55, 2252336), (62, 1998040), (76, 1629980), (80, 1548481), (88, 1407710), (95, 1303984), (110, 1126168), (124, 999020), (152, 814990), (155, 799216), (176, 703855), (190, 651992), (209, 592720), (220, 563084), (239, 518320), (248, 499510), (304, 407495), (310, 399608), (341, 363280), (380, 325996), (418, 296360), (440, 281542), (478, 259160), (496, 249755), (589, 210320), (620, 199804), (682, 181640), (760, 162998), (836, 148180), (880, 140771), (956, 129580), (1045, 118544), (1178, 105160), (1195, 103664), (1240, 99902), (1364, 90820), (1520, 81499), (1672, 74090), (1705, 72656), (1912, 64790), (2090, 59272), (2356, 52580), (2390, 51832), (2480, 49951), (2629, 47120), (2728, 45410), (2945, 42064), (3344, 37045), (3410, 36328), (3824, 32395), (4180, 29636), (4541, 27280), (4712, 26290), (4780, 25916), (5258, 23560), (5456, 22705), (5890, 21032), (6479, 19120), (6820, 18164), (7409, 16720), (8360, 14818), (9082, 13640), (9424, 13145), (9560, 12958), (10516, 11780)]