1320234640

素因数分解:

$2^4\times 5^1\times {\mathrm{16502933}}^1$

素因数の和:16502946

約数の個数: 20

約数和(自身を含む): 3069545724

約数和(自身を除く): 1749311084

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 16502933, 33005866, 66011732, 82514665, 132023464, 165029330, 264046928, 330058660, 660117320, 1320234640]

約数ペア:

[(1, 1320234640), (2, 660117320), (4, 330058660), (5, 264046928), (8, 165029330), (10, 132023464), (16, 82514665), (20, 66011732), (40, 33005866), (80, 16502933)]