31390790

素因数分解:

$2^1\times 5^1\times {\mathrm{397}}^1\times {\mathrm{7907}}^1$

素因数の和:8311

約数の個数: 16

約数和(自身を含む): 56652912

約数和(自身を除く): 25262122

約数列:

[1, 2, 5, 10, 397, 794, 1985, 3970, 7907, 15814, 39535, 79070, 3139079, 6278158, 15695395, 31390790]

約数ペア:

[(1, 31390790), (2, 15695395), (5, 6278158), (10, 3139079), (397, 79070), (794, 39535), (1985, 15814), (3970, 7907)]