81690849

素因数分解:

$3^4\times {\mathrm{151}}^1\times {\mathrm{6679}}^1$

素因数の和:6842

約数の個数: 20

約数和(自身を含む): 122858560

約数和(自身を除く): 41167711

約数列:

[1, 3, 9, 27, 81, 151, 453, 1359, 4077, 6679, 12231, 20037, 60111, 180333, 540999, 1008529, 3025587, 9076761, 27230283, 81690849]

約数ペア:

[(1, 81690849), (3, 27230283), (9, 9076761), (27, 3025587), (81, 1008529), (151, 540999), (453, 180333), (1359, 60111), (4077, 20037), (6679, 12231)]