1640676860

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{85363}}^1$

素因数の和:85434

約数の個数: 36

約数和(自身を含む): 3560190984

約数和(自身を除く): 1919514124

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 961, 1922, 3844, 4805, 9610, 19220, 85363, 170726, 341452, 426815, 853630, 1707260, 2646253, 5292506, 10585012, 13231265, 26462530, 52925060, 82033843, 164067686, 328135372, 410169215, 820338430, 1640676860]

約数ペア:

[(1, 1640676860), (2, 820338430), (4, 410169215), (5, 328135372), (10, 164067686), (20, 82033843), (31, 52925060), (62, 26462530), (124, 13231265), (155, 10585012), (310, 5292506), (620, 2646253), (961, 1707260), (1922, 853630), (3844, 426815), (4805, 341452), (9610, 170726), (19220, 85363)]