64581680

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{26041}}^1$

素因数の和:26085

約数の個数: 40

約数和(自身を含む): 155001984

約数和(自身を除く): 90420304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 26041, 52082, 104164, 130205, 208328, 260410, 416656, 520820, 807271, 1041640, 1614542, 2083280, 3229084, 4036355, 6458168, 8072710, 12916336, 16145420, 32290840, 64581680]

約数ペア:

[(1, 64581680), (2, 32290840), (4, 16145420), (5, 12916336), (8, 8072710), (10, 6458168), (16, 4036355), (20, 3229084), (31, 2083280), (40, 1614542), (62, 1041640), (80, 807271), (124, 520820), (155, 416656), (248, 260410), (310, 208328), (496, 130205), (620, 104164), (1240, 52082), (2480, 26041)]