80499640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{154807}}^1$

素因数の和:154831

約数の個数: 32

約数和(自身を含む): 195058080

約数和(自身を除く): 114558440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 154807, 309614, 619228, 774035, 1238456, 1548070, 2012491, 3096140, 4024982, 6192280, 8049964, 10062455, 16099928, 20124910, 40249820, 80499640]

約数ペア:

[(1, 80499640), (2, 40249820), (4, 20124910), (5, 16099928), (8, 10062455), (10, 8049964), (13, 6192280), (20, 4024982), (26, 3096140), (40, 2012491), (52, 1548070), (65, 1238456), (104, 774035), (130, 619228), (260, 309614), (520, 154807)]