81431668

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{656707}}^1$

素因数の和:656742

約数の個数: 12

約数和(自身を含む): 147102592

約数和(自身を除く): 65670924

約数列:

[1, 2, 4, 31, 62, 124, 656707, 1313414, 2626828, 20357917, 40715834, 81431668]

約数ペア:

[(1, 81431668), (2, 40715834), (4, 20357917), (31, 2626828), (62, 1313414), (124, 656707)]