18404090

素因数分解:

$2^1\times 5^1\times {\mathrm{881}}^1\times {\mathrm{2089}}^1$

素因数の和:2977

約数の個数: 16

約数和(自身を含む): 33180840

約数和(自身を除く): 14776750

約数列:

[1, 2, 5, 10, 881, 1762, 2089, 4178, 4405, 8810, 10445, 20890, 1840409, 3680818, 9202045, 18404090]

約数ペア:

[(1, 18404090), (2, 9202045), (5, 3680818), (10, 1840409), (881, 20890), (1762, 10445), (2089, 8810), (4178, 4405)]