16981345

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{4157}}^1$

素因数の和:4224

約数の個数: 16

約数和(自身を含む): 21954240

約数和(自身を除く): 4972895

約数列:

[1, 5, 19, 43, 95, 215, 817, 4085, 4157, 20785, 78983, 178751, 394915, 893755, 3396269, 16981345]

約数ペア:

[(1, 16981345), (5, 3396269), (19, 893755), (43, 394915), (95, 178751), (215, 78983), (817, 20785), (4085, 4157)]