20801935

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{761}}^1$

素因数の和:855

約数の個数: 32

約数和(自身を含む): 31601664

約数和(自身を除く): 10799729

約数列:

[1, 5, 7, 11, 35, 55, 71, 77, 355, 385, 497, 761, 781, 2485, 3805, 3905, 5327, 5467, 8371, 26635, 27335, 41855, 54031, 58597, 270155, 292985, 378217, 594341, 1891085, 2971705, 4160387, 20801935]

約数ペア:

[(1, 20801935), (5, 4160387), (7, 2971705), (11, 1891085), (35, 594341), (55, 378217), (71, 292985), (77, 270155), (355, 58597), (385, 54031), (497, 41855), (761, 27335), (781, 26635), (2485, 8371), (3805, 5467), (3905, 5327)]