20881264

素因数分解:

$2^4\times {\mathrm{107}}^1\times {\mathrm{12197}}^1$

素因数の和:12312

約数の個数: 20

約数和(自身を含む): 40838904

約数和(自身を除く): 19957640

約数列:

[1, 2, 4, 8, 16, 107, 214, 428, 856, 1712, 12197, 24394, 48788, 97576, 195152, 1305079, 2610158, 5220316, 10440632, 20881264]

約数ペア:

[(1, 20881264), (2, 10440632), (4, 5220316), (8, 2610158), (16, 1305079), (107, 195152), (214, 97576), (428, 48788), (856, 24394), (1712, 12197)]