81993465

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{11909}}^1$

素因数の和:11943

約数の個数: 40

約数和(自身を含む): 155639880

約数和(自身を除く): 73646415

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 255, 405, 459, 765, 1377, 2295, 6885, 11909, 35727, 59545, 107181, 178635, 202453, 321543, 535905, 607359, 964629, 1012265, 1607715, 1822077, 3036795, 4823145, 5466231, 9110385, 16398693, 27331155, 81993465]

約数ペア:

[(1, 81993465), (3, 27331155), (5, 16398693), (9, 9110385), (15, 5466231), (17, 4823145), (27, 3036795), (45, 1822077), (51, 1607715), (81, 1012265), (85, 964629), (135, 607359), (153, 535905), (255, 321543), (405, 202453), (459, 178635), (765, 107181), (1377, 59545), (2295, 35727), (6885, 11909)]