21459893

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{571}}^1$

素因数の和:657

約数の個数: 24

約数和(自身を含む): 27387360

約数和(自身を除く): 5927467

約数列:

[1, 7, 13, 49, 59, 91, 413, 571, 637, 767, 2891, 3997, 5369, 7423, 27979, 33689, 37583, 51961, 235823, 363727, 437957, 1650761, 3065699, 21459893]

約数ペア:

[(1, 21459893), (7, 3065699), (13, 1650761), (49, 437957), (59, 363727), (91, 235823), (413, 51961), (571, 37583), (637, 33689), (767, 27979), (2891, 7423), (3997, 5369)]