20747629

素因数分解:

$7^2\times {\mathrm{43}}^2\times {\mathrm{229}}^1$

素因数の和:329

約数の個数: 18

約数和(自身を含む): 24817230

約数和(自身を除く): 4069601

約数列:

[1, 7, 43, 49, 229, 301, 1603, 1849, 2107, 9847, 11221, 12943, 68929, 90601, 423421, 482503, 2963947, 20747629]

約数ペア:

[(1, 20747629), (7, 2963947), (43, 482503), (49, 423421), (229, 90601), (301, 68929), (1603, 12943), (1849, 11221), (2107, 9847)]