20438523

素因数分解:

$3^2\times 7^1\times {\mathrm{439}}^1\times {\mathrm{739}}^1$

素因数の和:1191

約数の個数: 24

約数和(自身を含む): 33862400

約数和(自身を除く): 13423877

約数列:

[1, 3, 7, 9, 21, 63, 439, 739, 1317, 2217, 3073, 3951, 5173, 6651, 9219, 15519, 27657, 46557, 324421, 973263, 2270947, 2919789, 6812841, 20438523]

約数ペア:

[(1, 20438523), (3, 6812841), (7, 2919789), (9, 2270947), (21, 973263), (63, 324421), (439, 46557), (739, 27657), (1317, 15519), (2217, 9219), (3073, 6651), (3951, 5173)]