18987591

素因数分解:

$3^1\times 7^1\times {\mathrm{337}}^1\times {\mathrm{2683}}^1$

素因数の和:3030

約数の個数: 16

約数和(自身を含む): 29030144

約数和(自身を除く): 10042553

約数列:

[1, 3, 7, 21, 337, 1011, 2359, 2683, 7077, 8049, 18781, 56343, 904171, 2712513, 6329197, 18987591]

約数ペア:

[(1, 18987591), (3, 6329197), (7, 2712513), (21, 904171), (337, 56343), (1011, 18781), (2359, 8049), (2683, 7077)]