81990009

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{4259}}^1$

素因数の和:4322

約数の個数: 32

約数和(自身を含む): 130867200

約数和(自身を除く): 48877191

約数列:

[1, 3, 9, 23, 27, 31, 69, 93, 207, 279, 621, 713, 837, 2139, 4259, 6417, 12777, 19251, 38331, 97957, 114993, 132029, 293871, 396087, 881613, 1188261, 2644839, 3036667, 3564783, 9110001, 27330003, 81990009]

約数ペア:

[(1, 81990009), (3, 27330003), (9, 9110001), (23, 3564783), (27, 3036667), (31, 2644839), (69, 1188261), (93, 881613), (207, 396087), (279, 293871), (621, 132029), (713, 114993), (837, 97957), (2139, 38331), (4259, 19251), (6417, 12777)]