128757640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{292631}}^1$

素因数の和:292653

約数の個数: 32

約数和(自身を含む): 316042560

約数和(自身を除く): 187284920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 292631, 585262, 1170524, 1463155, 2341048, 2926310, 3218941, 5852620, 6437882, 11705240, 12875764, 16094705, 25751528, 32189410, 64378820, 128757640]

約数ペア:

[(1, 128757640), (2, 64378820), (4, 32189410), (5, 25751528), (8, 16094705), (10, 12875764), (11, 11705240), (20, 6437882), (22, 5852620), (40, 3218941), (44, 2926310), (55, 2341048), (88, 1463155), (110, 1170524), (220, 585262), (440, 292631)]