20863765

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{4397}}^1$

素因数の和:4488

約数の個数: 16

約数和(自身を含む): 27337968

約数和(自身を除く): 6474203

約数列:

[1, 5, 13, 65, 73, 365, 949, 4397, 4745, 21985, 57161, 285805, 320981, 1604905, 4172753, 20863765]

約数ペア:

[(1, 20863765), (5, 4172753), (13, 1604905), (65, 320981), (73, 285805), (365, 57161), (949, 21985), (4397, 4745)]