18644668

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 38808000

約数和(自身を除く): 20163332

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 109, 149, 164, 218, 287, 298, 436, 574, 596, 763, 1043, 1148, 1526, 2086, 3052, 4172, 4469, 6109, 8938, 12218, 16241, 17876, 24436, 31283, 32482, 42763, 62566, 64964, 85526, 113687, 125132, 171052, 227374, 454748, 665881, 1331762, 2663524, 4661167, 9322334, 18644668]

約数ペア:

[(1, 18644668), (2, 9322334), (4, 4661167), (7, 2663524), (14, 1331762), (28, 665881), (41, 454748), (82, 227374), (109, 171052), (149, 125132), (164, 113687), (218, 85526), (287, 64964), (298, 62566), (436, 42763), (574, 32482), (596, 31283), (763, 24436), (1043, 17876), (1148, 16241), (1526, 12218), (2086, 8938), (3052, 6109), (4172, 4469)]