808015

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{401}}^1$

素因数の和:450

約数の個数: 16

約数和(自身を含む): 1080576

約数和(自身を除く): 272561

約数列:

[1, 5, 13, 31, 65, 155, 401, 403, 2005, 2015, 5213, 12431, 26065, 62155, 161603, 808015]

約数ペア:

[(1, 808015), (5, 161603), (13, 62155), (31, 26065), (65, 12431), (155, 5213), (401, 2015), (403, 2005)]