20440475

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{311}}^1$

素因数の和:571

約数の個数: 24

約数和(自身を含む): 27855360

約数和(自身を除く): 7414885

約数列:

[1, 5, 11, 25, 55, 239, 275, 311, 1195, 1555, 2629, 3421, 5975, 7775, 13145, 17105, 65725, 74329, 85525, 371645, 817619, 1858225, 4088095, 20440475]

約数ペア:

[(1, 20440475), (5, 4088095), (11, 1858225), (25, 817619), (55, 371645), (239, 85525), (275, 74329), (311, 65725), (1195, 17105), (1555, 13145), (2629, 7775), (3421, 5975)]