20947600

素因数分解:

$2^4\times 5^2\times {\mathrm{52369}}^1$

素因数の和:52387

約数の個数: 30

約数和(自身を含む): 50327570

約数和(自身を除く): 29379970

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 52369, 104738, 209476, 261845, 418952, 523690, 837904, 1047380, 1309225, 2094760, 2618450, 4189520, 5236900, 10473800, 20947600]

約数ペア:

[(1, 20947600), (2, 10473800), (4, 5236900), (5, 4189520), (8, 2618450), (10, 2094760), (16, 1309225), (20, 1047380), (25, 837904), (40, 523690), (50, 418952), (80, 261845), (100, 209476), (200, 104738), (400, 52369)]