91081991

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4789}}^1$

素因数の和:4839

約数の個数: 32

約数和(自身を含む): 128755200

約数和(自身を除く): 37673209

約数列:

[1, 7, 11, 13, 19, 77, 91, 133, 143, 209, 247, 1001, 1463, 1729, 2717, 4789, 19019, 33523, 52679, 62257, 90991, 368753, 435799, 636937, 684827, 1000901, 1182883, 4793789, 7006307, 8280181, 13011713, 91081991]

約数ペア:

[(1, 91081991), (7, 13011713), (11, 8280181), (13, 7006307), (19, 4793789), (77, 1182883), (91, 1000901), (133, 684827), (143, 636937), (209, 435799), (247, 368753), (1001, 90991), (1463, 62257), (1729, 52679), (2717, 33523), (4789, 19019)]