21905039

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{1201}}^1$

素因数の和:1298

約数の個数: 16

約数和(自身を含む): 25040064

約数和(自身を除く): 3135025

約数列:

[1, 13, 23, 61, 299, 793, 1201, 1403, 15613, 18239, 27623, 73261, 359099, 952393, 1685003, 21905039]

約数ペア:

[(1, 21905039), (13, 1685003), (23, 952393), (61, 359099), (299, 73261), (793, 27623), (1201, 18239), (1403, 15613)]