31565781

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{967}}^1$

素因数の和:1023

約数の個数: 40

約数和(自身を含む): 52473344

約数和(自身を除く): 20907563

約数列:

[1, 3, 9, 13, 27, 31, 39, 81, 93, 117, 279, 351, 403, 837, 967, 1053, 1209, 2511, 2901, 3627, 8703, 10881, 12571, 26109, 29977, 32643, 37713, 78327, 89931, 113139, 269793, 339417, 389701, 809379, 1018251, 1169103, 2428137, 3507309, 10521927, 31565781]

約数ペア:

[(1, 31565781), (3, 10521927), (9, 3507309), (13, 2428137), (27, 1169103), (31, 1018251), (39, 809379), (81, 389701), (93, 339417), (117, 269793), (279, 113139), (351, 89931), (403, 78327), (837, 37713), (967, 32643), (1053, 29977), (1209, 26109), (2511, 12571), (2901, 10881), (3627, 8703)]