21348255

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61879}}^1$

素因数の和:61910

約数の個数: 16

約数和(自身を含む): 35642880

約数和(自身を除く): 14294625

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 61879, 185637, 309395, 928185, 1423217, 4269651, 7116085, 21348255]

約数ペア:

[(1, 21348255), (3, 7116085), (5, 4269651), (15, 1423217), (23, 928185), (69, 309395), (115, 185637), (345, 61879)]