639155870

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1486409}}^1$

素因数の和:1486459

約数の個数: 16

約数和(自身を含む): 1177236720

約数和(自身を除く): 538080850

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 1486409, 2972818, 7432045, 14864090, 63915587, 127831174, 319577935, 639155870]

約数ペア:

[(1, 639155870), (2, 319577935), (5, 127831174), (10, 63915587), (43, 14864090), (86, 7432045), (215, 2972818), (430, 1486409)]