20718009

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{7699}}^1$

素因数の和:7741

約数の個数: 24

約数和(自身を含む): 33633600

約数和(自身を除く): 12915591

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 207, 299, 897, 2691, 7699, 23097, 69291, 100087, 177077, 300261, 531231, 900783, 1593693, 2302001, 6906003, 20718009]

約数ペア:

[(1, 20718009), (3, 6906003), (9, 2302001), (13, 1593693), (23, 900783), (39, 531231), (69, 300261), (117, 177077), (207, 100087), (299, 69291), (897, 23097), (2691, 7699)]