28180180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{201287}}^1$

素因数の和:201303

約数の個数: 24

約数和(自身を含む): 67632768

約数和(自身を除く): 39452588

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 201287, 402574, 805148, 1006435, 1409009, 2012870, 2818018, 4025740, 5636036, 7045045, 14090090, 28180180]

約数ペア:

[(1, 28180180), (2, 14090090), (4, 7045045), (5, 5636036), (7, 4025740), (10, 2818018), (14, 2012870), (20, 1409009), (28, 1006435), (35, 805148), (70, 402574), (140, 201287)]