81429867

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{401}}^1$

素因数の和:545

約数の個数: 40

約数和(自身を含む): 128414880

約数和(自身を除く): 46985013

約数列:

[1, 3, 9, 23, 27, 69, 81, 109, 207, 327, 401, 621, 981, 1203, 1863, 2507, 2943, 3609, 7521, 8829, 9223, 10827, 22563, 27669, 32481, 43709, 67689, 83007, 131127, 203067, 249021, 393381, 747063, 1005307, 1180143, 3015921, 3540429, 9047763, 27143289, 81429867]

約数ペア:

[(1, 81429867), (3, 27143289), (9, 9047763), (23, 3540429), (27, 3015921), (69, 1180143), (81, 1005307), (109, 747063), (207, 393381), (327, 249021), (401, 203067), (621, 131127), (981, 83007), (1203, 67689), (1863, 43709), (2507, 32481), (2943, 27669), (3609, 22563), (7521, 10827), (8829, 9223)]