21946519

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{499}}^1$

素因数の和:670

約数の個数: 16

約数和(自身を含む): 25792000

約数和(自身を除く): 3845481

約数列:

[1, 7, 61, 103, 427, 499, 721, 3493, 6283, 30439, 43981, 51397, 213073, 359779, 3135217, 21946519]

約数ペア:

[(1, 21946519), (7, 3135217), (61, 359779), (103, 213073), (427, 51397), (499, 43981), (721, 30439), (3493, 6283)]