88800020

素因数分解:

$2^2\times 5^1\times {\mathrm{4440001}}^1$

素因数の和:4440010

約数の個数: 12

約数和(自身を含む): 186480084

約数和(自身を除く): 97680064

約数列:

[1, 2, 4, 5, 10, 20, 4440001, 8880002, 17760004, 22200005, 44400010, 88800020]

約数ペア:

[(1, 88800020), (2, 44400010), (4, 22200005), (5, 17760004), (10, 8880002), (20, 4440001)]