3991870

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1$

素因数の和:280

約数の個数: 32

約数和(自身を含む): 7557120

約数和(自身を除く): 3565250

約数列:

[1, 2, 5, 10, 31, 62, 79, 155, 158, 163, 310, 326, 395, 790, 815, 1630, 2449, 4898, 5053, 10106, 12245, 12877, 24490, 25265, 25754, 50530, 64385, 128770, 399187, 798374, 1995935, 3991870]

約数ペア:

[(1, 3991870), (2, 1995935), (5, 798374), (10, 399187), (31, 128770), (62, 64385), (79, 50530), (155, 25754), (158, 25265), (163, 24490), (310, 12877), (326, 12245), (395, 10106), (790, 5053), (815, 4898), (1630, 2449)]