21012740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{150091}}^1$

素因数の和:150107

約数の個数: 24

約数和(自身を含む): 50430912

約数和(自身を除く): 29418172

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 150091, 300182, 600364, 750455, 1050637, 1500910, 2101274, 3001820, 4202548, 5253185, 10506370, 21012740]

約数ペア:

[(1, 21012740), (2, 10506370), (4, 5253185), (5, 4202548), (7, 3001820), (10, 2101274), (14, 1500910), (20, 1050637), (28, 750455), (35, 600364), (70, 300182), (140, 150091)]