21175240

素因数分解:

$2^3\times 5^1\times {\mathrm{529381}}^1$

素因数の和:529392

約数の個数: 16

約数和(自身を含む): 47644380

約数和(自身を除く): 26469140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 529381, 1058762, 2117524, 2646905, 4235048, 5293810, 10587620, 21175240]

約数ペア:

[(1, 21175240), (2, 10587620), (4, 5293810), (5, 4235048), (8, 2646905), (10, 2117524), (20, 1058762), (40, 529381)]