28181385

素因数分解:

$3^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1049}}^1$

素因数の和:1262

約数の個数: 32

約数和(自身を含む): 50400000

約数和(自身を除く): 22218615

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 199, 597, 995, 1049, 1791, 2985, 3147, 5245, 5373, 8955, 9441, 15735, 26865, 28323, 47205, 141615, 208751, 626253, 1043755, 1878759, 3131265, 5636277, 9393795, 28181385]

約数ペア:

[(1, 28181385), (3, 9393795), (5, 5636277), (9, 3131265), (15, 1878759), (27, 1043755), (45, 626253), (135, 208751), (199, 141615), (597, 47205), (995, 28323), (1049, 26865), (1791, 15735), (2985, 9441), (3147, 8955), (5245, 5373)]