639883986

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{1949}}^1\times {\mathrm{7817}}^1$

素因数の和:9778

約数の個数: 32

約数和(自身を含む): 1463529600

約数和(自身を除く): 823645614

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 1949, 3898, 5847, 7817, 11694, 13643, 15634, 23451, 27286, 40929, 46902, 54719, 81858, 109438, 164157, 328314, 15235333, 30470666, 45705999, 91411998, 106647331, 213294662, 319941993, 639883986]

約数ペア:

[(1, 639883986), (2, 319941993), (3, 213294662), (6, 106647331), (7, 91411998), (14, 45705999), (21, 30470666), (42, 15235333), (1949, 328314), (3898, 164157), (5847, 109438), (7817, 81858), (11694, 54719), (13643, 46902), (15634, 40929), (23451, 27286)]