81380912

素因数分解:

$2^4\times {\mathrm{499}}^1\times {\mathrm{10193}}^1$

素因数の和:10700

約数の個数: 20

約数和(自身を含む): 158007000

約数和(自身を除く): 76626088

約数列:

[1, 2, 4, 8, 16, 499, 998, 1996, 3992, 7984, 10193, 20386, 40772, 81544, 163088, 5086307, 10172614, 20345228, 40690456, 81380912]

約数ペア:

[(1, 81380912), (2, 40690456), (4, 20345228), (8, 10172614), (16, 5086307), (499, 163088), (998, 81544), (1996, 40772), (3992, 20386), (7984, 10193)]