128081375

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{271}}^1$

素因数の和:504

約数の個数: 32

約数和(自身を含む): 169728000

約数和(自身を除く): 41646625

約数列:

[1, 5, 19, 25, 95, 125, 199, 271, 475, 995, 1355, 2375, 3781, 4975, 5149, 6775, 18905, 24875, 25745, 33875, 53929, 94525, 128725, 269645, 472625, 643625, 1024651, 1348225, 5123255, 6741125, 25616275, 128081375]

約数ペア:

[(1, 128081375), (5, 25616275), (19, 6741125), (25, 5123255), (95, 1348225), (125, 1024651), (199, 643625), (271, 472625), (475, 269645), (995, 128725), (1355, 94525), (2375, 53929), (3781, 33875), (4975, 25745), (5149, 24875), (6775, 18905)]