19712079

素因数分解:

$3^4\times {\mathrm{163}}^1\times {\mathrm{1493}}^1$

素因数の和:1668

約数の個数: 20

約数和(自身を含む): 29646936

約数和(自身を除く): 9934857

約数列:

[1, 3, 9, 27, 81, 163, 489, 1467, 1493, 4401, 4479, 13203, 13437, 40311, 120933, 243359, 730077, 2190231, 6570693, 19712079]

約数ペア:

[(1, 19712079), (3, 6570693), (9, 2190231), (27, 730077), (81, 243359), (163, 120933), (489, 40311), (1467, 13437), (1493, 13203), (4401, 4479)]