21051185

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{167}}^1\times {\mathrm{1483}}^1$

素因数の和:1672

約数の個数: 16

約数和(自身を含む): 26925696

約数和(自身を除く): 5874511

約数列:

[1, 5, 17, 85, 167, 835, 1483, 2839, 7415, 14195, 25211, 126055, 247661, 1238305, 4210237, 21051185]

約数ペア:

[(1, 21051185), (5, 4210237), (17, 1238305), (85, 247661), (167, 126055), (835, 25211), (1483, 14195), (2839, 7415)]