19572220

素因数分解:

$2^2\times 5^1\times {\mathrm{978611}}^1$

素因数の和:978620

約数の個数: 12

約数和(自身を含む): 41101704

約数和(自身を除く): 21529484

約数列:

[1, 2, 4, 5, 10, 20, 978611, 1957222, 3914444, 4893055, 9786110, 19572220]

約数ペア:

[(1, 19572220), (2, 9786110), (4, 4893055), (5, 3914444), (10, 1957222), (20, 978611)]