388180317

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{307}}^1\times {\mathrm{3169}}^1$

素因数の和:3505

約数の個数: 32

約数和(自身を含む): 624870400

約数和(自身を除く): 236690083

約数列:

[1, 3, 7, 19, 21, 57, 133, 307, 399, 921, 2149, 3169, 5833, 6447, 9507, 17499, 22183, 40831, 60211, 66549, 122493, 180633, 421477, 972883, 1264431, 2918649, 6810181, 18484777, 20430543, 55454331, 129393439, 388180317]

約数ペア:

[(1, 388180317), (3, 129393439), (7, 55454331), (19, 20430543), (21, 18484777), (57, 6810181), (133, 2918649), (307, 1264431), (399, 972883), (921, 421477), (2149, 180633), (3169, 122493), (5833, 66549), (6447, 60211), (9507, 40831), (17499, 22183)]