21625955

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19571}}^1$

素因数の和:19606

約数の個数: 16

約数和(自身を含む): 29592864

約数和(自身を除く): 7966909

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 19571, 97855, 254423, 332707, 1272115, 1663535, 4325191, 21625955]

約数ペア:

[(1, 21625955), (5, 4325191), (13, 1663535), (17, 1272115), (65, 332707), (85, 254423), (221, 97855), (1105, 19571)]