20508159

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{23819}}^1$

素因数の和:23870

約数の個数: 16

約数和(自身を含む): 32014080

約数和(自身を除く): 11505921

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 23819, 71457, 166733, 500199, 976579, 2929737, 6836053, 20508159]

約数ペア:

[(1, 20508159), (3, 6836053), (7, 2929737), (21, 976579), (41, 500199), (123, 166733), (287, 71457), (861, 23819)]