72920180

素因数分解:

$2^2\times 5^1\times {\mathrm{3646009}}^1$

素因数の和:3646018

約数の個数: 12

約数和(自身を含む): 153132420

約数和(自身を除く): 80212240

約数列:

[1, 2, 4, 5, 10, 20, 3646009, 7292018, 14584036, 18230045, 36460090, 72920180]

約数ペア:

[(1, 72920180), (2, 36460090), (4, 18230045), (5, 14584036), (10, 7292018), (20, 3646009)]