19628765

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{971}}^1$

素因数の和:1300

約数の個数: 16

約数和(自身を含む): 25474176

約数和(自身を除く): 5845411

約数列:

[1, 5, 13, 65, 311, 971, 1555, 4043, 4855, 12623, 20215, 63115, 301981, 1509905, 3925753, 19628765]

約数ペア:

[(1, 19628765), (5, 3925753), (13, 1509905), (65, 301981), (311, 63115), (971, 20215), (1555, 12623), (4043, 4855)]