257805423

素因数分解:

$3^4\times {\mathrm{1669}}^1\times {\mathrm{1907}}^1$

素因数の和:3588

約数の個数: 20

約数和(自身を含む): 385549560

約数和(自身を除く): 127744137

約数列:

[1, 3, 9, 27, 81, 1669, 1907, 5007, 5721, 15021, 17163, 45063, 51489, 135189, 154467, 3182783, 9548349, 28645047, 85935141, 257805423]

約数ペア:

[(1, 257805423), (3, 85935141), (9, 28645047), (27, 9548349), (81, 3182783), (1669, 154467), (1907, 135189), (5007, 51489), (5721, 45063), (15021, 17163)]