21808325

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{11329}}^1$

素因数の和:11357

約数の個数: 24

約数和(自身を含む): 33718080

約数和(自身を除く): 11909755

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 175, 275, 385, 1925, 11329, 56645, 79303, 124619, 283225, 396515, 623095, 872333, 1982575, 3115475, 4361665, 21808325]

約数ペア:

[(1, 21808325), (5, 4361665), (7, 3115475), (11, 1982575), (25, 872333), (35, 623095), (55, 396515), (77, 283225), (175, 124619), (275, 79303), (385, 56645), (1925, 11329)]