81557775

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{27883}}^1$

素因数の和:27912

約数の個数: 36

約数和(自身を含む): 157321528

約数和(自身を除く): 75763753

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 27883, 83649, 139415, 250947, 362479, 418245, 697075, 1087437, 1254735, 1812395, 2091225, 3262311, 5437185, 6273675, 9061975, 16311555, 27185925, 81557775]

約数ペア:

[(1, 81557775), (3, 27185925), (5, 16311555), (9, 9061975), (13, 6273675), (15, 5437185), (25, 3262311), (39, 2091225), (45, 1812395), (65, 1254735), (75, 1087437), (117, 697075), (195, 418245), (225, 362479), (325, 250947), (585, 139415), (975, 83649), (2925, 27883)]