20511195

素因数分解:

$3^1\times 5^1\times {\mathrm{113}}^1\times {\mathrm{12101}}^1$

素因数の和:12222

約数の個数: 16

約数和(自身を含む): 33111072

約数和(自身を除く): 12599877

約数列:

[1, 3, 5, 15, 113, 339, 565, 1695, 12101, 36303, 60505, 181515, 1367413, 4102239, 6837065, 20511195]

約数ペア:

[(1, 20511195), (3, 6837065), (5, 4102239), (15, 1367413), (113, 181515), (339, 60505), (565, 36303), (1695, 12101)]