20001380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{142867}}^1$

素因数の和:142883

約数の個数: 24

約数和(自身を含む): 48003648

約数和(自身を除く): 28002268

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 142867, 285734, 571468, 714335, 1000069, 1428670, 2000138, 2857340, 4000276, 5000345, 10000690, 20001380]

約数ペア:

[(1, 20001380), (2, 10000690), (4, 5000345), (5, 4000276), (7, 2857340), (10, 2000138), (14, 1428670), (20, 1000069), (28, 714335), (35, 571468), (70, 285734), (140, 142867)]