720157420

素因数分解:

$2^2\times 5^1\times {\mathrm{36007871}}^1$

素因数の和:36007880

約数の個数: 12

約数和(自身を含む): 1512330624

約数和(自身を除く): 792173204

約数列:

[1, 2, 4, 5, 10, 20, 36007871, 72015742, 144031484, 180039355, 360078710, 720157420]

約数ペア:

[(1, 720157420), (2, 360078710), (4, 180039355), (5, 144031484), (10, 72015742), (20, 36007871)]