261478881

素因数分解:

$3^3\times {\mathrm{23}}^2\times {\mathrm{18307}}^1$

素因数の和:18362

約数の個数: 24

約数和(自身を含む): 404972960

約数和(自身を除く): 143494079

約数列:

[1, 3, 9, 23, 27, 69, 207, 529, 621, 1587, 4761, 14283, 18307, 54921, 164763, 421061, 494289, 1263183, 3789549, 9684403, 11368647, 29053209, 87159627, 261478881]

約数ペア:

[(1, 261478881), (3, 87159627), (9, 29053209), (23, 11368647), (27, 9684403), (69, 3789549), (207, 1263183), (529, 494289), (621, 421061), (1587, 164763), (4761, 54921), (14283, 18307)]