19724560

素因数分解:

$2^4\times 5^1\times {\mathrm{246557}}^1$

素因数の和:246570

約数の個数: 20

約数和(自身を含む): 45859788

約数和(自身を除く): 26135228

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 246557, 493114, 986228, 1232785, 1972456, 2465570, 3944912, 4931140, 9862280, 19724560]

約数ペア:

[(1, 19724560), (2, 9862280), (4, 4931140), (5, 3944912), (8, 2465570), (10, 1972456), (16, 1232785), (20, 986228), (40, 493114), (80, 246557)]