21291239659

素因数分解:

${\mathrm{19}}^1\times {\mathrm{53}}^2\times {\mathrm{367}}^1\times {\mathrm{1087}}^1$

素因数の和:1579

約数の個数: 24

約数和(自身を含む): 22925987840

約数和(自身を除く): 1634748181

約数列:

[1, 19, 53, 367, 1007, 1087, 2809, 6973, 19451, 20653, 53371, 57611, 369569, 398929, 1030903, 1094609, 3053383, 7579651, 19587157, 21143237, 58014277, 401721503, 1120591561, 21291239659]

約数ペア:

[(1, 21291239659), (19, 1120591561), (53, 401721503), (367, 58014277), (1007, 21143237), (1087, 19587157), (2809, 7579651), (6973, 3053383), (19451, 1094609), (20653, 1030903), (53371, 398929), (57611, 369569)]