157431640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{126961}}^1$

素因数の和:127003

約数の個数: 32

約数和(自身を含む): 365650560

約数和(自身を除く): 208218920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 126961, 253922, 507844, 634805, 1015688, 1269610, 2539220, 3935791, 5078440, 7871582, 15743164, 19678955, 31486328, 39357910, 78715820, 157431640]

約数ペア:

[(1, 157431640), (2, 78715820), (4, 39357910), (5, 31486328), (8, 19678955), (10, 15743164), (20, 7871582), (31, 5078440), (40, 3935791), (62, 2539220), (124, 1269610), (155, 1015688), (248, 634805), (310, 507844), (620, 253922), (1240, 126961)]