20510925

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{16087}}^1$

素因数の和:16117

約数の個数: 24

約数和(自身を含む): 35908416

約数和(自身を除く): 15397491

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 16087, 48261, 80435, 241305, 273479, 402175, 820437, 1206525, 1367395, 4102185, 6836975, 20510925]

約数ペア:

[(1, 20510925), (3, 6836975), (5, 4102185), (15, 1367395), (17, 1206525), (25, 820437), (51, 402175), (75, 273479), (85, 241305), (255, 80435), (425, 48261), (1275, 16087)]