20011640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{45481}}^1$

素因数の和:45503

約数の個数: 32

約数和(自身を含む): 49120560

約数和(自身を除く): 29108920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 45481, 90962, 181924, 227405, 363848, 454810, 500291, 909620, 1000582, 1819240, 2001164, 2501455, 4002328, 5002910, 10005820, 20011640]

約数ペア:

[(1, 20011640), (2, 10005820), (4, 5002910), (5, 4002328), (8, 2501455), (10, 2001164), (11, 1819240), (20, 1000582), (22, 909620), (40, 500291), (44, 454810), (55, 363848), (88, 227405), (110, 181924), (220, 90962), (440, 45481)]