20417870

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{419}}^1\times {\mathrm{443}}^1$

素因数の和:880

約数の個数: 32

約数和(自身を含む): 40279680

約数和(自身を除く): 19861810

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 419, 443, 838, 886, 2095, 2215, 4190, 4430, 4609, 4873, 9218, 9746, 23045, 24365, 46090, 48730, 185617, 371234, 928085, 1856170, 2041787, 4083574, 10208935, 20417870]

約数ペア:

[(1, 20417870), (2, 10208935), (5, 4083574), (10, 2041787), (11, 1856170), (22, 928085), (55, 371234), (110, 185617), (419, 48730), (443, 46090), (838, 24365), (886, 23045), (2095, 9746), (2215, 9218), (4190, 4873), (4430, 4609)]