221918755280

素因数分解:

$2^4\times 5^1\times {\mathrm{2773984441}}^1$

素因数の和:2773984454

約数の個数: 20

約数和(自身を含む): 515961106212

約数和(自身を除く): 294042350932

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2773984441, 5547968882, 11095937764, 13869922205, 22191875528, 27739844410, 44383751056, 55479688820, 110959377640, 221918755280]

約数ペア:

[(1, 221918755280), (2, 110959377640), (4, 55479688820), (5, 44383751056), (8, 27739844410), (10, 22191875528), (16, 13869922205), (20, 11095937764), (40, 5547968882), (80, 2773984441)]