20147560

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4621}}^1$

素因数の和:4741

約数の個数: 32

約数和(自身を含む): 45757800

約数和(自身を除く): 25610240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 4621, 9242, 18484, 23105, 36968, 46210, 92420, 184840, 503689, 1007378, 2014756, 2518445, 4029512, 5036890, 10073780, 20147560]

約数ペア:

[(1, 20147560), (2, 10073780), (4, 5036890), (5, 4029512), (8, 2518445), (10, 2014756), (20, 1007378), (40, 503689), (109, 184840), (218, 92420), (436, 46210), (545, 36968), (872, 23105), (1090, 18484), (2180, 9242), (4360, 4621)]