81991305

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{55213}}^1$

素因数の和:55238

約数の個数: 32

約数和(自身を含む): 159016320

約数和(自身を除く): 77025015

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 99, 135, 165, 297, 495, 1485, 55213, 165639, 276065, 496917, 607343, 828195, 1490751, 1822029, 2484585, 3036715, 5466087, 7453755, 9110145, 16398261, 27330435, 81991305]

約数ペア:

[(1, 81991305), (3, 27330435), (5, 16398261), (9, 9110145), (11, 7453755), (15, 5466087), (27, 3036715), (33, 2484585), (45, 1822029), (55, 1490751), (99, 828195), (135, 607343), (165, 496917), (297, 276065), (495, 165639), (1485, 55213)]