138236980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{16187}}^1$

素因数の和:16264

約数の個数: 48

約数和(自身を含む): 337228416

約数和(自身を除く): 198991436

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1220, 1708, 2135, 4270, 8540, 16187, 32374, 64748, 80935, 113309, 161870, 226618, 323740, 453236, 566545, 987407, 1133090, 1974814, 2266180, 3949628, 4937035, 6911849, 9874070, 13823698, 19748140, 27647396, 34559245, 69118490, 138236980]

約数ペア:

[(1, 138236980), (2, 69118490), (4, 34559245), (5, 27647396), (7, 19748140), (10, 13823698), (14, 9874070), (20, 6911849), (28, 4937035), (35, 3949628), (61, 2266180), (70, 1974814), (122, 1133090), (140, 987407), (244, 566545), (305, 453236), (427, 323740), (610, 226618), (854, 161870), (1220, 113309), (1708, 80935), (2135, 64748), (4270, 32374), (8540, 16187)]