79772020

素因数分解:

$2^2\times 5^1\times {\mathrm{3988601}}^1$

素因数の和:3988610

約数の個数: 12

約数和(自身を含む): 167521284

約数和(自身を除く): 87749264

約数列:

[1, 2, 4, 5, 10, 20, 3988601, 7977202, 15954404, 19943005, 39886010, 79772020]

約数ペア:

[(1, 79772020), (2, 39886010), (4, 19943005), (5, 15954404), (10, 7977202), (20, 3988601)]