21249968

素因数分解:

$2^4\times {\mathrm{239}}^1\times {\mathrm{5557}}^1$

素因数の和:5804

約数の個数: 20

約数和(自身を含む): 41351520

約数和(自身を除く): 20101552

約数列:

[1, 2, 4, 8, 16, 239, 478, 956, 1912, 3824, 5557, 11114, 22228, 44456, 88912, 1328123, 2656246, 5312492, 10624984, 21249968]

約数ペア:

[(1, 21249968), (2, 10624984), (4, 5312492), (8, 2656246), (16, 1328123), (239, 88912), (478, 44456), (956, 22228), (1912, 11114), (3824, 5557)]