90405153

素因数分解:

$3^4\times {\mathrm{157}}^1\times {\mathrm{7109}}^1$

素因数の和:7278

約数の個数: 20

約数和(自身を含む): 135928980

約数和(自身を除く): 45523827

約数列:

[1, 3, 9, 27, 81, 157, 471, 1413, 4239, 7109, 12717, 21327, 63981, 191943, 575829, 1116113, 3348339, 10045017, 30135051, 90405153]

約数ペア:

[(1, 90405153), (3, 30135051), (9, 10045017), (27, 3348339), (81, 1116113), (157, 575829), (471, 191943), (1413, 63981), (4239, 21327), (7109, 12717)]