39809620

素因数分解:

$2^2\times 5^1\times {\mathrm{1990481}}^1$

素因数の和:1990490

約数の個数: 12

約数和(自身を含む): 83600244

約数和(自身を除く): 43790624

約数列:

[1, 2, 4, 5, 10, 20, 1990481, 3980962, 7961924, 9952405, 19904810, 39809620]

約数ペア:

[(1, 39809620), (2, 19904810), (4, 9952405), (5, 7961924), (10, 3980962), (20, 1990481)]