656221460

素因数分解:

$2^2\times 5^1\times {\mathrm{3121}}^1\times {\mathrm{10513}}^1$

素因数の和:13643

約数の個数: 24

約数和(自身を含む): 1378637736

約数和(自身を除く): 722416276

約数列:

[1, 2, 4, 5, 10, 20, 3121, 6242, 10513, 12484, 15605, 21026, 31210, 42052, 52565, 62420, 105130, 210260, 32811073, 65622146, 131244292, 164055365, 328110730, 656221460]

約数ペア:

[(1, 656221460), (2, 328110730), (4, 164055365), (5, 131244292), (10, 65622146), (20, 32811073), (3121, 210260), (6242, 105130), (10513, 62420), (12484, 52565), (15605, 42052), (21026, 31210)]