20210875

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{9511}}^1$

素因数の和:9543

約数の個数: 16

約数和(自身を含む): 26709696

約数和(自身を除く): 6498821

約数列:

[1, 5, 17, 25, 85, 125, 425, 2125, 9511, 47555, 161687, 237775, 808435, 1188875, 4042175, 20210875]

約数ペア:

[(1, 20210875), (5, 4042175), (17, 1188875), (25, 808435), (85, 237775), (125, 161687), (425, 47555), (2125, 9511)]