20105271

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{331}}^1\times {\mathrm{397}}^1$

素因数の和:751

約数の個数: 24

約数和(自身を含む): 30919824

約数和(自身を除く): 10814553

約数列:

[1, 3, 9, 17, 51, 153, 331, 397, 993, 1191, 2979, 3573, 5627, 6749, 16881, 20247, 50643, 60741, 131407, 394221, 1182663, 2233919, 6701757, 20105271]

約数ペア:

[(1, 20105271), (3, 6701757), (9, 2233919), (17, 1182663), (51, 394221), (153, 131407), (331, 60741), (397, 50643), (993, 20247), (1191, 16881), (2979, 6749), (3573, 5627)]