21540701

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{3533}}^1$

素因数の和:3620

約数の個数: 16

約数和(自身を含む): 26914944

約数和(自身を除く): 5374243

約数列:

[1, 7, 13, 67, 91, 469, 871, 3533, 6097, 24731, 45929, 236711, 321503, 1656977, 3077243, 21540701]

約数ペア:

[(1, 21540701), (7, 3077243), (13, 1656977), (67, 321503), (91, 236711), (469, 45929), (871, 24731), (3533, 6097)]