261432479

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{257}}^1\times {\mathrm{1201}}^1$

素因数の和:1487

約数の個数: 24

約数和(自身を含む): 329963424

約数和(自身を除く): 68530945

約数列:

[1, 7, 11, 77, 121, 257, 847, 1201, 1799, 2827, 8407, 13211, 19789, 31097, 92477, 145321, 217679, 308657, 1017247, 2160599, 3395227, 23766589, 37347497, 261432479]

約数ペア:

[(1, 261432479), (7, 37347497), (11, 23766589), (77, 3395227), (121, 2160599), (257, 1017247), (847, 308657), (1201, 217679), (1799, 145321), (2827, 92477), (8407, 31097), (13211, 19789)]