21767380

素因数分解:

$2^2\times 5^1\times {\mathrm{521}}^1\times {\mathrm{2089}}^1$

素因数の和:2619

約数の個数: 24

約数和(自身を含む): 45821160

約数和(自身を除く): 24053780

約数列:

[1, 2, 4, 5, 10, 20, 521, 1042, 2084, 2089, 2605, 4178, 5210, 8356, 10420, 10445, 20890, 41780, 1088369, 2176738, 4353476, 5441845, 10883690, 21767380]

約数ペア:

[(1, 21767380), (2, 10883690), (4, 5441845), (5, 4353476), (10, 2176738), (20, 1088369), (521, 41780), (1042, 20890), (2084, 10445), (2089, 10420), (2605, 8356), (4178, 5210)]