81990465

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{317}}^1\times {\mathrm{401}}^1$

素因数の和:769

約数の個数: 32

約数和(自身を含む): 134994816

約数和(自身を除く): 53004351

約数列:

[1, 3, 5, 15, 43, 129, 215, 317, 401, 645, 951, 1203, 1585, 2005, 4755, 6015, 13631, 17243, 40893, 51729, 68155, 86215, 127117, 204465, 258645, 381351, 635585, 1906755, 5466031, 16398093, 27330155, 81990465]

約数ペア:

[(1, 81990465), (3, 27330155), (5, 16398093), (15, 5466031), (43, 1906755), (129, 635585), (215, 381351), (317, 258645), (401, 204465), (645, 127117), (951, 86215), (1203, 68155), (1585, 51729), (2005, 40893), (4755, 17243), (6015, 13631)]