19979968

素因数分解:

$2^6\times {\mathrm{71}}^1\times {\mathrm{4397}}^1$

素因数の和:4480

約数の個数: 28

約数和(自身を含む): 40215312

約数和(自身を除く): 20235344

約数列:

[1, 2, 4, 8, 16, 32, 64, 71, 142, 284, 568, 1136, 2272, 4397, 4544, 8794, 17588, 35176, 70352, 140704, 281408, 312187, 624374, 1248748, 2497496, 4994992, 9989984, 19979968]

約数ペア:

[(1, 19979968), (2, 9989984), (4, 4994992), (8, 2497496), (16, 1248748), (32, 624374), (64, 312187), (71, 281408), (142, 140704), (284, 70352), (568, 35176), (1136, 17588), (2272, 8794), (4397, 4544)]