81960339

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1\times {\mathrm{199}}^1$

素因数の和:399

約数の個数: 32

約数和(自身を含む): 117964800

約数和(自身を除く): 36004461

約数列:

[1, 3, 23, 47, 69, 127, 141, 199, 381, 597, 1081, 2921, 3243, 4577, 5969, 8763, 9353, 13731, 17907, 25273, 28059, 75819, 137287, 215119, 411861, 581279, 645357, 1187831, 1743837, 3563493, 27320113, 81960339]

約数ペア:

[(1, 81960339), (3, 27320113), (23, 3563493), (47, 1743837), (69, 1187831), (127, 645357), (141, 581279), (199, 411861), (381, 215119), (597, 137287), (1081, 75819), (2921, 28059), (3243, 25273), (4577, 17907), (5969, 13731), (8763, 9353)]