217040

素因数分解:

$2^4\times 5^1\times {\mathrm{2713}}^1$

素因数の和:2726

約数の個数: 20

約数和(自身を含む): 504804

約数和(自身を除く): 287764

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2713, 5426, 10852, 13565, 21704, 27130, 43408, 54260, 108520, 217040]

約数ペア:

[(1, 217040), (2, 108520), (4, 54260), (5, 43408), (8, 27130), (10, 21704), (16, 13565), (20, 10852), (40, 5426), (80, 2713)]