21504145

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{7039}}^1$

素因数の和:7104

約数の個数: 16

約数和(自身を含む): 28385280

約数和(自身を除く): 6881135

約数列:

[1, 5, 13, 47, 65, 235, 611, 3055, 7039, 35195, 91507, 330833, 457535, 1654165, 4300829, 21504145]

約数ペア:

[(1, 21504145), (5, 4300829), (13, 1654165), (47, 457535), (65, 330833), (235, 91507), (611, 35195), (3055, 7039)]