489597787

素因数分解:

$7^1\times {\mathrm{31}}^2\times {\mathrm{73}}^1\times {\mathrm{997}}^1$

素因数の和:1139

約数の個数: 24

約数和(自身を含む): 586680288

約数和(自身を除く): 97082501

約数列:

[1, 7, 31, 73, 217, 511, 961, 997, 2263, 6727, 6979, 15841, 30907, 70153, 72781, 216349, 491071, 509467, 958117, 2256211, 6706819, 15793477, 69942541, 489597787]

約数ペア:

[(1, 489597787), (7, 69942541), (31, 15793477), (73, 6706819), (217, 2256211), (511, 958117), (961, 509467), (997, 491071), (2263, 216349), (6727, 72781), (6979, 70153), (15841, 30907)]