20505849

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2423}}^1$

素因数の和:2477

約数の個数: 32

約数和(自身を含む): 34750464

約数和(自身を除く): 14244615

約数列:

[1, 3, 7, 13, 21, 31, 39, 91, 93, 217, 273, 403, 651, 1209, 2423, 2821, 7269, 8463, 16961, 31499, 50883, 75113, 94497, 220493, 225339, 525791, 661479, 976469, 1577373, 2929407, 6835283, 20505849]

約数ペア:

[(1, 20505849), (3, 6835283), (7, 2929407), (13, 1577373), (21, 976469), (31, 661479), (39, 525791), (91, 225339), (93, 220493), (217, 94497), (273, 75113), (403, 50883), (651, 31499), (1209, 16961), (2423, 8463), (2821, 7269)]