639642916

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{75323}}^1$

素因数の和:75531

約数の個数: 24

約数和(自身を含む): 1227479904

約数和(自身を除く): 587836988

約数列:

[1, 2, 4, 11, 22, 44, 193, 386, 772, 2123, 4246, 8492, 75323, 150646, 301292, 828553, 1657106, 3314212, 14537339, 29074678, 58149356, 159910729, 319821458, 639642916]

約数ペア:

[(1, 639642916), (2, 319821458), (4, 159910729), (11, 58149356), (22, 29074678), (44, 14537339), (193, 3314212), (386, 1657106), (772, 828553), (2123, 301292), (4246, 150646), (8492, 75323)]