661125840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{88861}}^1$

素因数の和:88908

約数の個数: 80

約数和(自身を含む): 2115626496

約数和(自身を除く): 1454500656

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 40, 48, 60, 62, 80, 93, 120, 124, 155, 186, 240, 248, 310, 372, 465, 496, 620, 744, 930, 1240, 1488, 1860, 2480, 3720, 7440, 88861, 177722, 266583, 355444, 444305, 533166, 710888, 888610, 1066332, 1332915, 1421776, 1777220, 2132664, 2665830, 2754691, 3554440, 4265328, 5331660, 5509382, 7108880, 8264073, 10663320, 11018764, 13773455, 16528146, 21326640, 22037528, 27546910, 33056292, 41320365, 44075056, 55093820, 66112584, 82640730, 110187640, 132225168, 165281460, 220375280, 330562920, 661125840]

約数ペア:

[(1, 661125840), (2, 330562920), (3, 220375280), (4, 165281460), (5, 132225168), (6, 110187640), (8, 82640730), (10, 66112584), (12, 55093820), (15, 44075056), (16, 41320365), (20, 33056292), (24, 27546910), (30, 22037528), (31, 21326640), (40, 16528146), (48, 13773455), (60, 11018764), (62, 10663320), (80, 8264073), (93, 7108880), (120, 5509382), (124, 5331660), (155, 4265328), (186, 3554440), (240, 2754691), (248, 2665830), (310, 2132664), (372, 1777220), (465, 1421776), (496, 1332915), (620, 1066332), (744, 888610), (930, 710888), (1240, 533166), (1488, 444305), (1860, 355444), (2480, 266583), (3720, 177722), (7440, 88861)]