20388105

素因数分解:

$3^4\times 5^1\times {\mathrm{50341}}^1$

素因数の和:50358

約数の個数: 20

約数和(自身を含む): 36548292

約数和(自身を除く): 16160187

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 50341, 151023, 251705, 453069, 755115, 1359207, 2265345, 4077621, 6796035, 20388105]

約数ペア:

[(1, 20388105), (3, 6796035), (5, 4077621), (9, 2265345), (15, 1359207), (27, 755115), (45, 453069), (81, 251705), (135, 151023), (405, 50341)]