28678185

素因数分解:

$3^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2689}}^1$

素因数の和:2782

約数の個数: 32

約数和(自身を含む): 51648000

約数和(自身を除く): 22969815

約数列:

[1, 3, 5, 9, 15, 27, 45, 79, 135, 237, 395, 711, 1185, 2133, 2689, 3555, 8067, 10665, 13445, 24201, 40335, 72603, 121005, 212431, 363015, 637293, 1062155, 1911879, 3186465, 5735637, 9559395, 28678185]

約数ペア:

[(1, 28678185), (3, 9559395), (5, 5735637), (9, 3186465), (15, 1911879), (27, 1062155), (45, 637293), (79, 363015), (135, 212431), (237, 121005), (395, 72603), (711, 40335), (1185, 24201), (2133, 13445), (2689, 10665), (3555, 8067)]