51319359

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{20887}}^1$

素因数の和:20916

約数の個数: 32

約数和(自身を含む): 93578240

約数和(自身を除く): 42258881

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 819, 2457, 20887, 62661, 146209, 187983, 271531, 438627, 563949, 814593, 1315881, 1900717, 2443779, 3947643, 5702151, 7331337, 17106453, 51319359]

約数ペア:

[(1, 51319359), (3, 17106453), (7, 7331337), (9, 5702151), (13, 3947643), (21, 2443779), (27, 1900717), (39, 1315881), (63, 814593), (91, 563949), (117, 438627), (189, 271531), (273, 187983), (351, 146209), (819, 62661), (2457, 20887)]