21587395

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{349}}^1$

素因数の和:582

約数の個数: 16

約数和(自身を含む): 26460000

約数和(自身を除く): 4872605

約数列:

[1, 5, 89, 139, 349, 445, 695, 1745, 12371, 31061, 48511, 61855, 155305, 242555, 4317479, 21587395]

約数ペア:

[(1, 21587395), (5, 4317479), (89, 242555), (139, 155305), (349, 61855), (445, 48511), (695, 31061), (1745, 12371)]