19986305

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{3221}}^1$

素因数の和:3316

約数の個数: 16

約数和(自身を含む): 25750224

約数和(自身を除く): 5763919

約数列:

[1, 5, 17, 73, 85, 365, 1241, 3221, 6205, 16105, 54757, 235133, 273785, 1175665, 3997261, 19986305]

約数ペア:

[(1, 19986305), (5, 3997261), (17, 1175665), (73, 273785), (85, 235133), (365, 54757), (1241, 16105), (3221, 6205)]