261617587

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{863}}^1$

素因数の和:1039

約数の個数: 32

約数和(自身を含む): 339738624

約数和(自身を除く): 78121037

約数列:

[1, 7, 11, 31, 77, 127, 217, 341, 863, 889, 1397, 2387, 3937, 6041, 9493, 9779, 26753, 27559, 43307, 66451, 109601, 187271, 294283, 303149, 767207, 1205611, 2059981, 3397631, 8439277, 23783417, 37373941, 261617587]

約数ペア:

[(1, 261617587), (7, 37373941), (11, 23783417), (31, 8439277), (77, 3397631), (127, 2059981), (217, 1205611), (341, 767207), (863, 303149), (889, 294283), (1397, 187271), (2387, 109601), (3937, 66451), (6041, 43307), (9493, 27559), (9779, 26753)]