21402860

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{22769}}^1$

素因数の和:22825

約数の個数: 24

約数和(自身を含む): 45904320

約数和(自身を除く): 24501460

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 22769, 45538, 91076, 113845, 227690, 455380, 1070143, 2140286, 4280572, 5350715, 10701430, 21402860]

約数ペア:

[(1, 21402860), (2, 10701430), (4, 5350715), (5, 4280572), (10, 2140286), (20, 1070143), (47, 455380), (94, 227690), (188, 113845), (235, 91076), (470, 45538), (940, 22769)]