20904957

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{181}}^1\times {\mathrm{313}}^1$

素因数の和:541

約数の個数: 24

約数和(自身を含む): 31202808

約数和(自身を除く): 10297851

約数列:

[1, 3, 9, 41, 123, 181, 313, 369, 543, 939, 1629, 2817, 7421, 12833, 22263, 38499, 56653, 66789, 115497, 169959, 509877, 2322773, 6968319, 20904957]

約数ペア:

[(1, 20904957), (3, 6968319), (9, 2322773), (41, 509877), (123, 169959), (181, 115497), (313, 66789), (369, 56653), (543, 38499), (939, 22263), (1629, 12833), (2817, 7421)]