81785079

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:237

約数の個数: 64

約数和(自身を含む): 137134080

約数和(自身を除く): 55349001

約数列:

[1, 3, 9, 17, 23, 27, 51, 61, 69, 127, 153, 183, 207, 381, 391, 459, 549, 621, 1037, 1143, 1173, 1403, 1647, 2159, 2921, 3111, 3429, 3519, 4209, 6477, 7747, 8763, 9333, 10557, 12627, 19431, 23241, 23851, 26289, 27999, 37881, 49657, 58293, 69723, 71553, 78867, 131699, 148971, 178181, 209169, 214659, 395097, 446913, 534543, 643977, 1185291, 1340739, 1603629, 3029077, 3555873, 4810887, 9087231, 27261693, 81785079]

約数ペア:

[(1, 81785079), (3, 27261693), (9, 9087231), (17, 4810887), (23, 3555873), (27, 3029077), (51, 1603629), (61, 1340739), (69, 1185291), (127, 643977), (153, 534543), (183, 446913), (207, 395097), (381, 214659), (391, 209169), (459, 178181), (549, 148971), (621, 131699), (1037, 78867), (1143, 71553), (1173, 69723), (1403, 58293), (1647, 49657), (2159, 37881), (2921, 27999), (3111, 26289), (3429, 23851), (3519, 23241), (4209, 19431), (6477, 12627), (7747, 10557), (8763, 9333)]