20668881

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{4219}}^1$

素因数の和:4316

約数の個数: 16

約数和(自身を含む): 29168640

約数和(自身を除く): 8499759

約数列:

[1, 3, 23, 69, 71, 213, 1633, 4219, 4899, 12657, 97037, 291111, 299549, 898647, 6889627, 20668881]

約数ペア:

[(1, 20668881), (3, 6889627), (23, 898647), (69, 299549), (71, 291111), (213, 97037), (1633, 12657), (4219, 4899)]