21246381

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{20177}}^1$

素因数の和:20202

約数の個数: 20

約数和(自身を含む): 34181532

約数和(自身を除く): 12935151

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 20177, 60531, 181593, 262301, 544779, 786903, 1634337, 2360709, 7082127, 21246381]

約数ペア:

[(1, 21246381), (3, 7082127), (9, 2360709), (13, 1634337), (27, 786903), (39, 544779), (81, 262301), (117, 181593), (351, 60531), (1053, 20177)]