257571457

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{1103}}^1$

素因数の和:1221

約数の個数: 32

約数和(自身を含む): 320495616

約数和(自身を除く): 62924159

約数列:

[1, 11, 13, 23, 71, 143, 253, 299, 781, 923, 1103, 1633, 3289, 10153, 12133, 14339, 17963, 21229, 25369, 78313, 157729, 233519, 279059, 329797, 861443, 1018069, 1801199, 3627767, 11198759, 19813189, 23415587, 257571457]

約数ペア:

[(1, 257571457), (11, 23415587), (13, 19813189), (23, 11198759), (71, 3627767), (143, 1801199), (253, 1018069), (299, 861443), (781, 329797), (923, 279059), (1103, 233519), (1633, 157729), (3289, 78313), (10153, 25369), (12133, 21229), (14339, 17963)]