15997895

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{401}}^1$

素因数の和:586

約数の個数: 16

約数和(自身を含む): 19681920

約数和(自身を除く): 3684025

約数列:

[1, 5, 79, 101, 395, 401, 505, 2005, 7979, 31679, 39895, 40501, 158395, 202505, 3199579, 15997895]

約数ペア:

[(1, 15997895), (5, 3199579), (79, 202505), (101, 158395), (395, 40501), (401, 39895), (505, 31679), (2005, 7979)]