20615623

素因数分解:

$7^2\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{137}}^1$

素因数の和:271

約数の個数: 24

約数和(自身を含む): 25108272

約数和(自身を除く): 4492649

約数列:

[1, 7, 37, 49, 83, 137, 259, 581, 959, 1813, 3071, 4067, 5069, 6713, 11371, 21497, 35483, 79597, 150479, 248381, 420727, 557179, 2945089, 20615623]

約数ペア:

[(1, 20615623), (7, 2945089), (37, 557179), (49, 420727), (83, 248381), (137, 150479), (259, 79597), (581, 35483), (959, 21497), (1813, 11371), (3071, 6713), (4067, 5069)]