81809553

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1\times {\mathrm{499}}^1$

素因数の和:757

約数の個数: 32

約数和(自身を含む): 128896000

約数和(自身を除く): 47086447

約数列:

[1, 3, 7, 21, 37, 111, 211, 259, 499, 633, 777, 1477, 1497, 3493, 4431, 7807, 10479, 18463, 23421, 54649, 55389, 105289, 129241, 163947, 315867, 387723, 737023, 2211069, 3895693, 11687079, 27269851, 81809553]

約数ペア:

[(1, 81809553), (3, 27269851), (7, 11687079), (21, 3895693), (37, 2211069), (111, 737023), (211, 387723), (259, 315867), (499, 163947), (633, 129241), (777, 105289), (1477, 55389), (1497, 54649), (3493, 23421), (4431, 18463), (7807, 10479)]