72020020

素因数分解:

$2^2\times 5^1\times {\mathrm{3601001}}^1$

素因数の和:3601010

約数の個数: 12

約数和(自身を含む): 151242084

約数和(自身を除く): 79222064

約数列:

[1, 2, 4, 5, 10, 20, 3601001, 7202002, 14404004, 18005005, 36010010, 72020020]

約数ペア:

[(1, 72020020), (2, 36010010), (4, 18005005), (5, 14404004), (10, 7202002), (20, 3601001)]