1313975

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{311}}^1$

素因数の和:347

約数の個数: 18

約数和(自身を含む): 1769976

約数和(自身を除く): 456001

約数列:

[1, 5, 13, 25, 65, 169, 311, 325, 845, 1555, 4043, 4225, 7775, 20215, 52559, 101075, 262795, 1313975]

約数ペア:

[(1, 1313975), (5, 262795), (13, 101075), (25, 52559), (65, 20215), (169, 7775), (311, 4225), (325, 4043), (845, 1555)]