20832497

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:401

約数の個数: 24

約数和(自身を含む): 26039880

約数和(自身を除く): 5207383

約数列:

[1, 7, 17, 49, 89, 119, 281, 623, 833, 1513, 1967, 4361, 4777, 10591, 13769, 25009, 33439, 74137, 175063, 234073, 425153, 1225441, 2976071, 20832497]

約数ペア:

[(1, 20832497), (7, 2976071), (17, 1225441), (49, 425153), (89, 234073), (119, 175063), (281, 74137), (623, 33439), (833, 25009), (1513, 13769), (1967, 10591), (4361, 4777)]