20875790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{160583}}^1$

素因数の和:160603

約数の個数: 16

約数和(自身を含む): 40467168

約数和(自身を除く): 19591378

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 160583, 321166, 802915, 1605830, 2087579, 4175158, 10437895, 20875790]

約数ペア:

[(1, 20875790), (2, 10437895), (5, 4175158), (10, 2087579), (13, 1605830), (26, 802915), (65, 321166), (130, 160583)]