20665113

素因数分解:

$3^1\times 7^2\times {\mathrm{257}}^1\times {\mathrm{547}}^1$

素因数の和:821

約数の個数: 24

約数和(自身を含む): 32235552

約数和(自身を除く): 11570439

約数列:

[1, 3, 7, 21, 49, 147, 257, 547, 771, 1641, 1799, 3829, 5397, 11487, 12593, 26803, 37779, 80409, 140579, 421737, 984053, 2952159, 6888371, 20665113]

約数ペア:

[(1, 20665113), (3, 6888371), (7, 2952159), (21, 984053), (49, 421737), (147, 140579), (257, 80409), (547, 37779), (771, 26803), (1641, 12593), (1799, 11487), (3829, 5397)]