20403921

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{9539}}^1$

素因数の和:9596

約数の個数: 16

約数和(自身を含む): 29306880

約数和(自身を除く): 8902959

約数列:

[1, 3, 23, 31, 69, 93, 713, 2139, 9539, 28617, 219397, 295709, 658191, 887127, 6801307, 20403921]

約数ペア:

[(1, 20403921), (3, 6801307), (23, 887127), (31, 658191), (69, 295709), (93, 219397), (713, 28617), (2139, 9539)]