19816867

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{4027}}^1$

素因数の和:4090

約数の個数: 16

約数和(自身を含む): 24490240

約数和(自身を除く): 4673373

約数列:

[1, 7, 19, 37, 133, 259, 703, 4027, 4921, 28189, 76513, 148999, 535591, 1042993, 2830981, 19816867]

約数ペア:

[(1, 19816867), (7, 2830981), (19, 1042993), (37, 535591), (133, 148999), (259, 76513), (703, 28189), (4027, 4921)]