21340825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1093}}^1$

素因数の和:1185

約数の個数: 24

約数和(自身を含む): 29301696

約数和(自身を除く): 7960871

約数列:

[1, 5, 11, 25, 55, 71, 275, 355, 781, 1093, 1775, 3905, 5465, 12023, 19525, 27325, 60115, 77603, 300575, 388015, 853633, 1940075, 4268165, 21340825]

約数ペア:

[(1, 21340825), (5, 4268165), (11, 1940075), (25, 853633), (55, 388015), (71, 300575), (275, 77603), (355, 60115), (781, 27325), (1093, 19525), (1775, 12023), (3905, 5465)]