81347763

素因数分解:

$3^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{20071}}^1$

素因数の和:20274

約数の個数: 16

約数和(自身を含む): 124606976

約数和(自身を除く): 43259213

約数列:

[1, 3, 7, 21, 193, 579, 1351, 4053, 20071, 60213, 140497, 421491, 3873703, 11621109, 27115921, 81347763]

約数ペア:

[(1, 81347763), (3, 27115921), (7, 11621109), (21, 3873703), (193, 421491), (579, 140497), (1351, 60213), (4053, 20071)]