81451665

素因数分解:

$3^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{11987}}^1$

素因数の和:12149

約数の個数: 24

約数和(自身を含む): 142129728

約数和(自身を除く): 60678063

約数列:

[1, 3, 5, 9, 15, 45, 151, 453, 755, 1359, 2265, 6795, 11987, 35961, 59935, 107883, 179805, 539415, 1810037, 5430111, 9050185, 16290333, 27150555, 81451665]

約数ペア:

[(1, 81451665), (3, 27150555), (5, 16290333), (9, 9050185), (15, 5430111), (45, 1810037), (151, 539415), (453, 179805), (755, 107883), (1359, 59935), (2265, 35961), (6795, 11987)]