21499851

素因数分解:

$3^1\times {\mathrm{131}}^1\times {\mathrm{227}}^1\times {\mathrm{241}}^1$

素因数の和:602

約数の個数: 16

約数和(自身を含む): 29132928

約数和(自身を除く): 7633077

約数列:

[1, 3, 131, 227, 241, 393, 681, 723, 29737, 31571, 54707, 89211, 94713, 164121, 7166617, 21499851]

約数ペア:

[(1, 21499851), (3, 7166617), (131, 164121), (227, 94713), (241, 89211), (393, 54707), (681, 31571), (723, 29737)]