19828977

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{3137}}^1$

素因数の和:3197

約数の個数: 24

約数和(自身を含む): 31480416

約数和(自身を除く): 11651439

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 903, 2107, 3137, 6321, 9411, 21959, 65877, 134891, 153713, 404673, 461139, 944237, 2832711, 6609659, 19828977]

約数ペア:

[(1, 19828977), (3, 6609659), (7, 2832711), (21, 944237), (43, 461139), (49, 404673), (129, 153713), (147, 134891), (301, 65877), (903, 21959), (2107, 9411), (3137, 6321)]