21771070

素因数分解:

$2^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{5323}}^1$

素因数の和:5739

約数の個数: 16

約数和(自身を含む): 39291120

約数和(自身を除く): 17520050

約数列:

[1, 2, 5, 10, 409, 818, 2045, 4090, 5323, 10646, 26615, 53230, 2177107, 4354214, 10885535, 21771070]

約数ペア:

[(1, 21771070), (2, 10885535), (5, 4354214), (10, 2177107), (409, 53230), (818, 26615), (2045, 10646), (4090, 5323)]