21261231

素因数分解:

$3^3\times {\mathrm{163}}^1\times {\mathrm{4831}}^1$

素因数の和:5003

約数の個数: 16

約数和(自身を含む): 31697920

約数和(自身を除く): 10436689

約数列:

[1, 3, 9, 27, 163, 489, 1467, 4401, 4831, 14493, 43479, 130437, 787453, 2362359, 7087077, 21261231]

約数ペア:

[(1, 21261231), (3, 7087077), (9, 2362359), (27, 787453), (163, 130437), (489, 43479), (1467, 14493), (4401, 4831)]