261640305

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{123707}}^1$

素因数の和:123765

約数の個数: 24

約数和(自身を含む): 463162752

約数和(自身を除く): 201522447

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 123707, 371121, 618535, 1113363, 1855605, 5566815, 5814229, 17442687, 29071145, 52328061, 87213435, 261640305]

約数ペア:

[(1, 261640305), (3, 87213435), (5, 52328061), (9, 29071145), (15, 17442687), (45, 5814229), (47, 5566815), (141, 1855605), (235, 1113363), (423, 618535), (705, 371121), (2115, 123707)]