20825181

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19777}}^1$

素因数の和:19802

約数の個数: 20

約数和(自身を含む): 33503932

約数和(自身を除く): 12678751

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 19777, 59331, 177993, 257101, 533979, 771303, 1601937, 2313909, 6941727, 20825181]

約数ペア:

[(1, 20825181), (3, 6941727), (9, 2313909), (13, 1601937), (27, 771303), (39, 533979), (81, 257101), (117, 177993), (351, 59331), (1053, 19777)]