18356139

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{167}}^1$

素因数の和:261

約数の個数: 40

約数和(自身を含む): 29272320

約数和(自身を除く): 10916181

約数列:

[1, 3, 9, 23, 27, 59, 69, 81, 167, 177, 207, 501, 531, 621, 1357, 1503, 1593, 1863, 3841, 4071, 4509, 4779, 9853, 11523, 12213, 13527, 29559, 34569, 36639, 88677, 103707, 109917, 226619, 266031, 311121, 679857, 798093, 2039571, 6118713, 18356139]

約数ペア:

[(1, 18356139), (3, 6118713), (9, 2039571), (23, 798093), (27, 679857), (59, 311121), (69, 266031), (81, 226619), (167, 109917), (177, 103707), (207, 88677), (501, 36639), (531, 34569), (621, 29559), (1357, 13527), (1503, 12213), (1593, 11523), (1863, 9853), (3841, 4779), (4071, 4509)]