20581305

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1877}}^1$

素因数の和:1945

約数の個数: 32

約数和(自身を含む): 35697024

約数和(自身を除く): 15115719

約数列:

[1, 3, 5, 15, 17, 43, 51, 85, 129, 215, 255, 645, 731, 1877, 2193, 3655, 5631, 9385, 10965, 28155, 31909, 80711, 95727, 159545, 242133, 403555, 478635, 1210665, 1372087, 4116261, 6860435, 20581305]

約数ペア:

[(1, 20581305), (3, 6860435), (5, 4116261), (15, 1372087), (17, 1210665), (43, 478635), (51, 403555), (85, 242133), (129, 159545), (215, 95727), (255, 80711), (645, 31909), (731, 28155), (1877, 10965), (2193, 9385), (3655, 5631)]