20542765

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1\times {\mathrm{397}}^1$

素因数の和:612

約数の個数: 16

約数和(自身を含む): 25217280

約数和(自身を除く): 4674515

約数列:

[1, 5, 79, 131, 395, 397, 655, 1985, 10349, 31363, 51745, 52007, 156815, 260035, 4108553, 20542765]

約数ペア:

[(1, 20542765), (5, 4108553), (79, 260035), (131, 156815), (395, 52007), (397, 51745), (655, 31363), (1985, 10349)]