28420767

素因数分解:

$3^3\times {\mathrm{151}}^1\times {\mathrm{6971}}^1$

素因数の和:7131

約数の個数: 16

約数和(自身を含む): 42389760

約数和(自身を除く): 13968993

約数列:

[1, 3, 9, 27, 151, 453, 1359, 4077, 6971, 20913, 62739, 188217, 1052621, 3157863, 9473589, 28420767]

約数ペア:

[(1, 28420767), (3, 9473589), (9, 3157863), (27, 1052621), (151, 188217), (453, 62739), (1359, 20913), (4077, 6971)]