19155280

素因数分解:

$2^4\times 5^1\times {\mathrm{239441}}^1$

素因数の和:239454

約数の個数: 20

約数和(自身を含む): 44536212

約数和(自身を除く): 25380932

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 239441, 478882, 957764, 1197205, 1915528, 2394410, 3831056, 4788820, 9577640, 19155280]

約数ペア:

[(1, 19155280), (2, 9577640), (4, 4788820), (5, 3831056), (8, 2394410), (10, 1915528), (16, 1197205), (20, 957764), (40, 478882), (80, 239441)]