20888080

素因数分解:

$2^4\times 5^1\times {\mathrm{261101}}^1$

素因数の和:261114

約数の個数: 20

約数和(自身を含む): 48564972

約数和(自身を除く): 27676892

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 261101, 522202, 1044404, 1305505, 2088808, 2611010, 4177616, 5222020, 10444040, 20888080]

約数ペア:

[(1, 20888080), (2, 10444040), (4, 5222020), (5, 4177616), (8, 2611010), (10, 2088808), (16, 1305505), (20, 1044404), (40, 522202), (80, 261101)]