203907385

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 281304576

約数和(自身を除く): 77397191

約数列:

[1, 5, 11, 47, 55, 71, 101, 121, 235, 355, 505, 517, 605, 781, 1111, 2585, 3337, 3905, 4747, 5555, 5687, 7171, 8591, 12221, 16685, 23735, 28435, 35855, 36707, 42955, 52217, 61105, 78881, 183535, 261085, 337037, 394405, 403777, 574387, 867691, 1685185, 2018885, 2871935, 3707407, 4338455, 18537035, 40781477, 203907385]

約数ペア:

[(1, 203907385), (5, 40781477), (11, 18537035), (47, 4338455), (55, 3707407), (71, 2871935), (101, 2018885), (121, 1685185), (235, 867691), (355, 574387), (505, 403777), (517, 394405), (605, 337037), (781, 261085), (1111, 183535), (2585, 78881), (3337, 61105), (3905, 52217), (4747, 42955), (5555, 36707), (5687, 35855), (7171, 28435), (8591, 23735), (12221, 16685)]