198902015

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{401}}^1\times {\mathrm{587}}^1$

素因数の和:1019

約数の個数: 24

約数和(自身を含む): 259540848

約数和(自身を除く): 60638833

約数列:

[1, 5, 13, 65, 169, 401, 587, 845, 2005, 2935, 5213, 7631, 26065, 38155, 67769, 99203, 235387, 338845, 496015, 1176935, 3060031, 15300155, 39780403, 198902015]

約数ペア:

[(1, 198902015), (5, 39780403), (13, 15300155), (65, 3060031), (169, 1176935), (401, 496015), (587, 338845), (845, 235387), (2005, 99203), (2935, 67769), (5213, 38155), (7631, 26065)]