7977640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{18131}}^1$

素因数の和:18153

約数の個数: 32

約数和(自身を含む): 19582560

約数和(自身を除く): 11604920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 18131, 36262, 72524, 90655, 145048, 181310, 199441, 362620, 398882, 725240, 797764, 997205, 1595528, 1994410, 3988820, 7977640]

約数ペア:

[(1, 7977640), (2, 3988820), (4, 1994410), (5, 1595528), (8, 997205), (10, 797764), (11, 725240), (20, 398882), (22, 362620), (40, 199441), (44, 181310), (55, 145048), (88, 90655), (110, 72524), (220, 36262), (440, 18131)]