21088400

素因数分解:

$2^4\times 5^2\times {\mathrm{52721}}^1$

素因数の和:52739

約数の個数: 30

約数和(自身を含む): 50665842

約数和(自身を除く): 29577442

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 52721, 105442, 210884, 263605, 421768, 527210, 843536, 1054420, 1318025, 2108840, 2636050, 4217680, 5272100, 10544200, 21088400]

約数ペア:

[(1, 21088400), (2, 10544200), (4, 5272100), (5, 4217680), (8, 2636050), (10, 2108840), (16, 1318025), (20, 1054420), (25, 843536), (40, 527210), (50, 421768), (80, 263605), (100, 210884), (200, 105442), (400, 52721)]