12998245

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{643}}^1$

素因数の和:972

約数の個数: 16

約数和(自身を含む): 16877952

約数和(自身を除く): 3879707

約数列:

[1, 5, 13, 65, 311, 643, 1555, 3215, 4043, 8359, 20215, 41795, 199973, 999865, 2599649, 12998245]

約数ペア:

[(1, 12998245), (5, 2599649), (13, 999865), (65, 199973), (311, 41795), (643, 20215), (1555, 8359), (3215, 4043)]