219645520

素因数分解:

$2^4\times 5^1\times {\mathrm{2745569}}^1$

素因数の和:2745582

約数の個数: 20

約数和(自身を含む): 510676020

約数和(自身を除く): 291030500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2745569, 5491138, 10982276, 13727845, 21964552, 27455690, 43929104, 54911380, 109822760, 219645520]

約数ペア:

[(1, 219645520), (2, 109822760), (4, 54911380), (5, 43929104), (8, 27455690), (10, 21964552), (16, 13727845), (20, 10982276), (40, 5491138), (80, 2745569)]