18171783

素因数分解:

$3^7\times 7^1\times {\mathrm{1187}}^1$

素因数の和:1215

約数の個数: 32

約数和(自身を含む): 31173120

約数和(自身を除く): 13001337

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1187, 1701, 2187, 3561, 5103, 8309, 10683, 15309, 24927, 32049, 74781, 96147, 224343, 288441, 673029, 865323, 2019087, 2595969, 6057261, 18171783]

約数ペア:

[(1, 18171783), (3, 6057261), (7, 2595969), (9, 2019087), (21, 865323), (27, 673029), (63, 288441), (81, 224343), (189, 96147), (243, 74781), (567, 32049), (729, 24927), (1187, 15309), (1701, 10683), (2187, 8309), (3561, 5103)]