21082257

素因数分解:

$3^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{2053}}^1$

素因数の和:2229

約数の個数: 24

約数和(自身を含む): 35033024

約数和(自身を除く): 13950767

約数列:

[1, 3, 7, 9, 21, 63, 163, 489, 1141, 1467, 2053, 3423, 6159, 10269, 14371, 18477, 43113, 129339, 334639, 1003917, 2342473, 3011751, 7027419, 21082257]

約数ペア:

[(1, 21082257), (3, 7027419), (7, 3011751), (9, 2342473), (21, 1003917), (63, 334639), (163, 129339), (489, 43113), (1141, 18477), (1467, 14371), (2053, 10269), (3423, 6159)]