21324947

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{349}}^1$

素因数の和:435

約数の個数: 24

約数和(自身を含む): 26334000

約数和(自身を除く): 5009053

約数列:

[1, 7, 29, 43, 49, 203, 301, 349, 1247, 1421, 2107, 2443, 8729, 10121, 15007, 17101, 61103, 70847, 105049, 435203, 495929, 735343, 3046421, 21324947]

約数ペア:

[(1, 21324947), (7, 3046421), (29, 735343), (43, 495929), (49, 435203), (203, 105049), (301, 70847), (349, 61103), (1247, 17101), (1421, 15007), (2107, 10121), (2443, 8729)]