261454310

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{64877}}^1$

素因数の和:64928

約数の個数: 32

約数和(自身を含む): 523176192

約数和(自身を除く): 261721882

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 64877, 129754, 324385, 648770, 843401, 1686802, 2011187, 4022374, 4217005, 8434010, 10055935, 20111870, 26145431, 52290862, 130727155, 261454310]

約数ペア:

[(1, 261454310), (2, 130727155), (5, 52290862), (10, 26145431), (13, 20111870), (26, 10055935), (31, 8434010), (62, 4217005), (65, 4022374), (130, 2011187), (155, 1686802), (310, 843401), (403, 648770), (806, 324385), (2015, 129754), (4030, 64877)]