261570245

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{1087}}^1$

素因数の和:1277

約数の個数: 32

約数和(自身を含む): 352512000

約数和(自身を除く): 90941755

約数列:

[1, 5, 17, 19, 85, 95, 149, 323, 745, 1087, 1615, 2533, 2831, 5435, 12665, 14155, 18479, 20653, 48127, 92395, 103265, 161963, 240635, 351101, 809815, 1755505, 2753371, 3077297, 13766855, 15386485, 52314049, 261570245]

約数ペア:

[(1, 261570245), (5, 52314049), (17, 15386485), (19, 13766855), (85, 3077297), (95, 2753371), (149, 1755505), (323, 809815), (745, 351101), (1087, 240635), (1615, 161963), (2533, 103265), (2831, 92395), (5435, 48127), (12665, 20653), (14155, 18479)]