21270255

素因数分解:

$3^1\times 5^1\times {\mathrm{919}}^1\times {\mathrm{1543}}^1$

素因数の和:2470

約数の個数: 16

約数和(自身を含む): 34091520

約数和(自身を除く): 12821265

約数列:

[1, 3, 5, 15, 919, 1543, 2757, 4595, 4629, 7715, 13785, 23145, 1418017, 4254051, 7090085, 21270255]

約数ペア:

[(1, 21270255), (3, 7090085), (5, 4254051), (15, 1418017), (919, 23145), (1543, 13785), (2757, 7715), (4595, 4629)]