21283885

素因数分解:

$5^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{797}}^1$

素因数の和:925

約数の個数: 24

約数和(自身を含む): 30020760

約数和(自身を除く): 8736875

約数列:

[1, 5, 7, 35, 49, 109, 245, 545, 763, 797, 3815, 3985, 5341, 5579, 26705, 27895, 39053, 86873, 195265, 434365, 608111, 3040555, 4256777, 21283885]

約数ペア:

[(1, 21283885), (5, 4256777), (7, 3040555), (35, 608111), (49, 434365), (109, 195265), (245, 86873), (545, 39053), (763, 27895), (797, 26705), (3815, 5579), (3985, 5341)]