18720968

素因数分解:

$2^3\times 7^1\times {\mathrm{109}}^1\times {\mathrm{3067}}^1$

素因数の和:3189

約数の個数: 32

約数和(自身を含む): 40497600

約数和(自身を除く): 21776632

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 109, 218, 436, 763, 872, 1526, 3052, 3067, 6104, 6134, 12268, 21469, 24536, 42938, 85876, 171752, 334303, 668606, 1337212, 2340121, 2674424, 4680242, 9360484, 18720968]

約数ペア:

[(1, 18720968), (2, 9360484), (4, 4680242), (7, 2674424), (8, 2340121), (14, 1337212), (28, 668606), (56, 334303), (109, 171752), (218, 85876), (436, 42938), (763, 24536), (872, 21469), (1526, 12268), (3052, 6134), (3067, 6104)]