21205212

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{252443}}^1$

素因数の和:252457

約数の個数: 24

約数和(自身を含む): 56547456

約数和(自身を除く): 35342244

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 252443, 504886, 757329, 1009772, 1514658, 1767101, 3029316, 3534202, 5301303, 7068404, 10602606, 21205212]

約数ペア:

[(1, 21205212), (2, 10602606), (3, 7068404), (4, 5301303), (6, 3534202), (7, 3029316), (12, 1767101), (14, 1514658), (21, 1009772), (28, 757329), (42, 504886), (84, 252443)]