21925145

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{20981}}^1$

素因数の和:21016

約数の個数: 16

約数和(自身を含む): 30214080

約数和(自身を除く): 8288935

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 20981, 104905, 230791, 398639, 1153955, 1993195, 4385029, 21925145]

約数ペア:

[(1, 21925145), (5, 4385029), (11, 1993195), (19, 1153955), (55, 398639), (95, 230791), (209, 104905), (1045, 20981)]