20021428

素因数分解:

$2^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{4799}}^1$

素因数の和:4959

約数の個数: 24

約数和(自身を含む): 40320000

約数和(自身を除く): 20298572

約数列:

[1, 2, 4, 7, 14, 28, 149, 298, 596, 1043, 2086, 4172, 4799, 9598, 19196, 33593, 67186, 134372, 715051, 1430102, 2860204, 5005357, 10010714, 20021428]

約数ペア:

[(1, 20021428), (2, 10010714), (4, 5005357), (7, 2860204), (14, 1430102), (28, 715051), (149, 134372), (298, 67186), (596, 33593), (1043, 19196), (2086, 9598), (4172, 4799)]