28900905

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2467}}^1$

素因数の和:2557

約数の個数: 32

約数和(自身を含む): 51176448

約数和(自身を除く): 22275543

約数列:

[1, 3, 5, 11, 15, 33, 55, 71, 165, 213, 355, 781, 1065, 2343, 2467, 3905, 7401, 11715, 12335, 27137, 37005, 81411, 135685, 175157, 407055, 525471, 875785, 1926727, 2627355, 5780181, 9633635, 28900905]

約数ペア:

[(1, 28900905), (3, 9633635), (5, 5780181), (11, 2627355), (15, 1926727), (33, 875785), (55, 525471), (71, 407055), (165, 175157), (213, 135685), (355, 81411), (781, 37005), (1065, 27137), (2343, 12335), (2467, 11715), (3905, 7401)]