21015505

素因数分解:

$5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{10177}}^1$

素因数の和:10248

約数の個数: 16

約数和(自身を含む): 29312640

約数和(自身を除く): 8297135

約数列:

[1, 5, 7, 35, 59, 295, 413, 2065, 10177, 50885, 71239, 356195, 600443, 3002215, 4203101, 21015505]

約数ペア:

[(1, 21015505), (5, 4203101), (7, 3002215), (35, 600443), (59, 356195), (295, 71239), (413, 50885), (2065, 10177)]