21980600

素因数分解:

$2^3\times 5^2\times {\mathrm{109903}}^1$

素因数の和:109919

約数の個数: 24

約数和(自身を含む): 51105360

約数和(自身を除く): 29124760

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 109903, 219806, 439612, 549515, 879224, 1099030, 2198060, 2747575, 4396120, 5495150, 10990300, 21980600]

約数ペア:

[(1, 21980600), (2, 10990300), (4, 5495150), (5, 4396120), (8, 2747575), (10, 2198060), (20, 1099030), (25, 879224), (40, 549515), (50, 439612), (100, 219806), (200, 109903)]