18123975

素因数分解:

$3^2\times 5^2\times {\mathrm{109}}^1\times {\mathrm{739}}^1$

素因数の和:864

約数の個数: 36

約数和(自身を含む): 32804200

約数和(自身を除く): 14680225

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 109, 225, 327, 545, 739, 981, 1635, 2217, 2725, 3695, 4905, 6651, 8175, 11085, 18475, 24525, 33255, 55425, 80551, 166275, 241653, 402755, 724959, 1208265, 2013775, 3624795, 6041325, 18123975]

約数ペア:

[(1, 18123975), (3, 6041325), (5, 3624795), (9, 2013775), (15, 1208265), (25, 724959), (45, 402755), (75, 241653), (109, 166275), (225, 80551), (327, 55425), (545, 33255), (739, 24525), (981, 18475), (1635, 11085), (2217, 8175), (2725, 6651), (3695, 4905)]