74128689

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{21283}}^1$

素因数の和:21338

約数の個数: 20

約数和(自身を含む): 113316016

約数和(自身を除く): 39187327

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 21283, 63849, 191547, 574641, 915169, 1723923, 2745507, 8236521, 24709563, 74128689]

約数ペア:

[(1, 74128689), (3, 24709563), (9, 8236521), (27, 2745507), (43, 1723923), (81, 915169), (129, 574641), (387, 191547), (1161, 63849), (3483, 21283)]