21031885

素因数分解:

$5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{9851}}^1$

素因数の和:9924

約数の個数: 16

約数和(自身を含む): 29319552

約数和(自身を除く): 8287667

約数列:

[1, 5, 7, 35, 61, 305, 427, 2135, 9851, 49255, 68957, 344785, 600911, 3004555, 4206377, 21031885]

約数ペア:

[(1, 21031885), (5, 4206377), (7, 3004555), (35, 600911), (61, 344785), (305, 68957), (427, 49255), (2135, 9851)]