256865128

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{189989}}^1$

素因数の和:190021

約数の個数: 24

約数和(自身を含む): 521522550

約数和(自身を除く): 264657422

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 169, 338, 676, 1352, 189989, 379978, 759956, 1519912, 2469857, 4939714, 9879428, 19758856, 32108141, 64216282, 128432564, 256865128]

約数ペア:

[(1, 256865128), (2, 128432564), (4, 64216282), (8, 32108141), (13, 19758856), (26, 9879428), (52, 4939714), (104, 2469857), (169, 1519912), (338, 759956), (676, 379978), (1352, 189989)]