20787435

素因数分解:

$3^7\times 5^1\times {\mathrm{1901}}^1$

素因数の和:1927

約数の個数: 32

約数和(自身を含む): 37431360

約数和(自身を除く): 16643925

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 1901, 2187, 3645, 5703, 9505, 10935, 17109, 28515, 51327, 85545, 153981, 256635, 461943, 769905, 1385829, 2309715, 4157487, 6929145, 20787435]

約数ペア:

[(1, 20787435), (3, 6929145), (5, 4157487), (9, 2309715), (15, 1385829), (27, 769905), (45, 461943), (81, 256635), (135, 153981), (243, 85545), (405, 51327), (729, 28515), (1215, 17109), (1901, 10935), (2187, 9505), (3645, 5703)]