27908680

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{317}}^1$

素因数の和:430

約数の個数: 64

約数和(自身を含む): 65940480

約数和(自身を除く): 38031800

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 71, 124, 142, 155, 248, 284, 310, 317, 355, 568, 620, 634, 710, 1240, 1268, 1420, 1585, 2201, 2536, 2840, 3170, 4402, 6340, 8804, 9827, 11005, 12680, 17608, 19654, 22010, 22507, 39308, 44020, 45014, 49135, 78616, 88040, 90028, 98270, 112535, 180056, 196540, 225070, 393080, 450140, 697717, 900280, 1395434, 2790868, 3488585, 5581736, 6977170, 13954340, 27908680]

約数ペア:

[(1, 27908680), (2, 13954340), (4, 6977170), (5, 5581736), (8, 3488585), (10, 2790868), (20, 1395434), (31, 900280), (40, 697717), (62, 450140), (71, 393080), (124, 225070), (142, 196540), (155, 180056), (248, 112535), (284, 98270), (310, 90028), (317, 88040), (355, 78616), (568, 49135), (620, 45014), (634, 44020), (710, 39308), (1240, 22507), (1268, 22010), (1420, 19654), (1585, 17608), (2201, 12680), (2536, 11005), (2840, 9827), (3170, 8804), (4402, 6340)]