21001870

素因数分解:

$2^1\times 5^1\times {\mathrm{307}}^1\times {\mathrm{6841}}^1$

素因数の和:7155

約数の個数: 16

約数和(自身を含む): 37932048

約数和(自身を除く): 16930178

約数列:

[1, 2, 5, 10, 307, 614, 1535, 3070, 6841, 13682, 34205, 68410, 2100187, 4200374, 10500935, 21001870]

約数ペア:

[(1, 21001870), (2, 10500935), (5, 4200374), (10, 2100187), (307, 68410), (614, 34205), (1535, 13682), (3070, 6841)]