2905227

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:145

約数の個数: 40

約数和(自身を含む): 4878720

約数和(自身を除く): 1973493

約数列:

[1, 3, 9, 13, 27, 31, 39, 81, 89, 93, 117, 267, 279, 351, 403, 801, 837, 1053, 1157, 1209, 2403, 2511, 2759, 3471, 3627, 7209, 8277, 10413, 10881, 24831, 31239, 32643, 35867, 74493, 93717, 107601, 223479, 322803, 968409, 2905227]

約数ペア:

[(1, 2905227), (3, 968409), (9, 322803), (13, 223479), (27, 107601), (31, 93717), (39, 74493), (81, 35867), (89, 32643), (93, 31239), (117, 24831), (267, 10881), (279, 10413), (351, 8277), (403, 7209), (801, 3627), (837, 3471), (1053, 2759), (1157, 2511), (1209, 2403)]