208784020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{147031}}^1$

素因数の和:147111

約数の個数: 24

約数和(自身を含む): 444624768

約数和(自身を除く): 235840748

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 147031, 294062, 588124, 735155, 1470310, 2940620, 10439201, 20878402, 41756804, 52196005, 104392010, 208784020]

約数ペア:

[(1, 208784020), (2, 104392010), (4, 52196005), (5, 41756804), (10, 20878402), (20, 10439201), (71, 2940620), (142, 1470310), (284, 735155), (355, 588124), (710, 294062), (1420, 147031)]