18205825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{277}}^1$

素因数の和:537

約数の個数: 24

約数和(自身を含む): 24819840

約数和(自身を除く): 6614015

約数列:

[1, 5, 11, 25, 55, 239, 275, 277, 1195, 1385, 2629, 3047, 5975, 6925, 13145, 15235, 65725, 66203, 76175, 331015, 728233, 1655075, 3641165, 18205825]

約数ペア:

[(1, 18205825), (5, 3641165), (11, 1655075), (25, 728233), (55, 331015), (239, 76175), (275, 66203), (277, 65725), (1195, 15235), (1385, 13145), (2629, 6925), (3047, 5975)]