21836390

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1\times {\mathrm{211}}^1$

素因数の和:428

約数の個数: 32

約数和(自身を含む): 40296960

約数和(自身を除く): 18460570

約数列:

[1, 2, 5, 10, 79, 131, 158, 211, 262, 395, 422, 655, 790, 1055, 1310, 2110, 10349, 16669, 20698, 27641, 33338, 51745, 55282, 83345, 103490, 138205, 166690, 276410, 2183639, 4367278, 10918195, 21836390]

約数ペア:

[(1, 21836390), (2, 10918195), (5, 4367278), (10, 2183639), (79, 276410), (131, 166690), (158, 138205), (211, 103490), (262, 83345), (395, 55282), (422, 51745), (655, 33338), (790, 27641), (1055, 20698), (1310, 16669), (2110, 10349)]