63991280

素因数分解:

$2^4\times 5^1\times {\mathrm{799891}}^1$

素因数の和:799904

約数の個数: 20

約数和(自身を含む): 148779912

約数和(自身を除く): 84788632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 799891, 1599782, 3199564, 3999455, 6399128, 7998910, 12798256, 15997820, 31995640, 63991280]

約数ペア:

[(1, 63991280), (2, 31995640), (4, 15997820), (5, 12798256), (8, 7998910), (10, 6399128), (16, 3999455), (20, 3199564), (40, 1599782), (80, 799891)]