21354613

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{307}}^1\times {\mathrm{523}}^1$

素因数の和:856

約数の個数: 16

約数和(自身を含む): 25822720

約数和(自身を除く): 4468107

約数列:

[1, 7, 19, 133, 307, 523, 2149, 3661, 5833, 9937, 40831, 69559, 160561, 1123927, 3050659, 21354613]

約数ペア:

[(1, 21354613), (7, 3050659), (19, 1123927), (133, 160561), (307, 69559), (523, 40831), (2149, 9937), (3661, 5833)]