20317715

素因数分解:

$5^1\times {\mathrm{11}}^3\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:152

約数の個数: 32

約数和(自身を含む): 27827712

約数和(自身を除く): 7509997

約数列:

[1, 5, 11, 43, 55, 71, 121, 215, 355, 473, 605, 781, 1331, 2365, 3053, 3905, 5203, 6655, 8591, 15265, 26015, 33583, 42955, 57233, 94501, 167915, 286165, 369413, 472505, 1847065, 4063543, 20317715]

約数ペア:

[(1, 20317715), (5, 4063543), (11, 1847065), (43, 472505), (55, 369413), (71, 286165), (121, 167915), (215, 94501), (355, 57233), (473, 42955), (605, 33583), (781, 26015), (1331, 15265), (2365, 8591), (3053, 6655), (3905, 5203)]