157220720

素因数分解:

$2^4\times 5^1\times {\mathrm{1965259}}^1$

素因数の和:1965272

約数の個数: 20

約数和(自身を含む): 365538360

約数和(自身を除く): 208317640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1965259, 3930518, 7861036, 9826295, 15722072, 19652590, 31444144, 39305180, 78610360, 157220720]

約数ペア:

[(1, 157220720), (2, 78610360), (4, 39305180), (5, 31444144), (8, 19652590), (10, 15722072), (16, 9826295), (20, 7861036), (40, 3930518), (80, 1965259)]