31440981

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{883}}^1$

素因数の和:993

約数の個数: 32

約数和(自身を含む): 49900032

約数和(自身を除く): 18459051

約数列:

[1, 3, 11, 13, 33, 39, 83, 143, 249, 429, 883, 913, 1079, 2649, 2739, 3237, 9713, 11479, 11869, 29139, 34437, 35607, 73289, 126269, 219867, 378807, 806179, 952757, 2418537, 2858271, 10480327, 31440981]

約数ペア:

[(1, 31440981), (3, 10480327), (11, 2858271), (13, 2418537), (33, 952757), (39, 806179), (83, 378807), (143, 219867), (249, 126269), (429, 73289), (883, 35607), (913, 34437), (1079, 29139), (2649, 11869), (2739, 11479), (3237, 9713)]