21289873491

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{929}}^1\times {\mathrm{19739}}^1$

素因数の和:20720

約数の個数: 32

約数和(自身を含む): 32310432000

約数和(自身を除く): 11020558509

約数列:

[1, 3, 9, 27, 43, 129, 387, 929, 1161, 2787, 8361, 19739, 25083, 39947, 59217, 119841, 177651, 359523, 532953, 848777, 1078569, 2546331, 7638993, 18337531, 22916979, 55012593, 165037779, 495113337, 788513833, 2365541499, 7096624497, 21289873491]

約数ペア:

[(1, 21289873491), (3, 7096624497), (9, 2365541499), (27, 788513833), (43, 495113337), (129, 165037779), (387, 55012593), (929, 22916979), (1161, 18337531), (2787, 7638993), (8361, 2546331), (19739, 1078569), (25083, 848777), (39947, 532953), (59217, 359523), (119841, 177651)]