8920720

素因数分解:

$2^4\times 5^1\times {\mathrm{111509}}^1$

素因数の和:111522

約数の個数: 20

約数和(自身を含む): 20740860

約数和(自身を除く): 11820140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 111509, 223018, 446036, 557545, 892072, 1115090, 1784144, 2230180, 4460360, 8920720]

約数ペア:

[(1, 8920720), (2, 4460360), (4, 2230180), (5, 1784144), (8, 1115090), (10, 892072), (16, 557545), (20, 446036), (40, 223018), (80, 111509)]