21160660

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{6491}}^1$

素因数の和:6663

約数の個数: 24

約数和(自身を含む): 44716896

約数和(自身を除く): 23556236

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 6491, 12982, 25964, 32455, 64910, 129820, 1058033, 2116066, 4232132, 5290165, 10580330, 21160660]

約数ペア:

[(1, 21160660), (2, 10580330), (4, 5290165), (5, 4232132), (10, 2116066), (20, 1058033), (163, 129820), (326, 64910), (652, 32455), (815, 25964), (1630, 12982), (3260, 6491)]