21320036

素因数分解:

$2^2\times {\mathrm{1129}}^1\times {\mathrm{4721}}^1$

素因数の和:5854

約数の個数: 12

約数和(自身を含む): 37351020

約数和(自身を除く): 16030984

約数列:

[1, 2, 4, 1129, 2258, 4516, 4721, 9442, 18884, 5330009, 10660018, 21320036]

約数ペア:

[(1, 21320036), (2, 10660018), (4, 5330009), (1129, 18884), (2258, 9442), (4516, 4721)]