261384321

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{223}}^1\times {\mathrm{3229}}^1$

素因数の和:3477

約数の個数: 24

約数和(自身を含む): 384912640

約数和(自身を除く): 123528319

約数列:

[1, 3, 11, 33, 121, 223, 363, 669, 2453, 3229, 7359, 9687, 26983, 35519, 80949, 106557, 390709, 720067, 1172127, 2160201, 7920737, 23762211, 87128107, 261384321]

約数ペア:

[(1, 261384321), (3, 87128107), (11, 23762211), (33, 7920737), (121, 2160201), (223, 1172127), (363, 720067), (669, 390709), (2453, 106557), (3229, 80949), (7359, 35519), (9687, 26983)]