289721889

素因数分解:

$3^2\times {\mathrm{73}}^1\times {\mathrm{173}}^1\times {\mathrm{2549}}^1$

素因数の和:2801

約数の個数: 24

約数和(自身を含む): 426839400

約数和(自身を除く): 137117511

約数列:

[1, 3, 9, 73, 173, 219, 519, 657, 1557, 2549, 7647, 12629, 22941, 37887, 113661, 186077, 440977, 558231, 1322931, 1674693, 3968793, 32191321, 96573963, 289721889]

約数ペア:

[(1, 289721889), (3, 96573963), (9, 32191321), (73, 3968793), (173, 1674693), (219, 1322931), (519, 558231), (657, 440977), (1557, 186077), (2549, 113661), (7647, 37887), (12629, 22941)]