1279297640

素因数分解:

$2^3\times 5^1\times {\mathrm{31982441}}^1$

素因数の和:31982452

約数の個数: 16

約数和(自身を含む): 2878419780

約数和(自身を除く): 1599122140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 31982441, 63964882, 127929764, 159912205, 255859528, 319824410, 639648820, 1279297640]

約数ペア:

[(1, 1279297640), (2, 639648820), (4, 319824410), (5, 255859528), (8, 159912205), (10, 127929764), (20, 63964882), (40, 31982441)]