81811305

素因数分解:

$3^2\times 5^1\times {\mathrm{761}}^1\times {\mathrm{2389}}^1$

素因数の和:3161

約数の個数: 24

約数和(自身を含む): 142052040

約数和(自身を除く): 60240735

約数列:

[1, 3, 5, 9, 15, 45, 761, 2283, 2389, 3805, 6849, 7167, 11415, 11945, 21501, 34245, 35835, 107505, 1818029, 5454087, 9090145, 16362261, 27270435, 81811305]

約数ペア:

[(1, 81811305), (3, 27270435), (5, 16362261), (9, 9090145), (15, 5454087), (45, 1818029), (761, 107505), (2283, 35835), (2389, 34245), (3805, 21501), (6849, 11945), (7167, 11415)]