16728381

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{557}}^1$

素因数の和:681

約数の個数: 24

約数和(自身を含む): 25069824

約数和(自身を除く): 8341443

約数列:

[1, 3, 9, 47, 71, 141, 213, 423, 557, 639, 1671, 3337, 5013, 10011, 26179, 30033, 39547, 78537, 118641, 235611, 355923, 1858709, 5576127, 16728381]

約数ペア:

[(1, 16728381), (3, 5576127), (9, 1858709), (47, 355923), (71, 235611), (141, 118641), (213, 78537), (423, 39547), (557, 30033), (639, 26179), (1671, 10011), (3337, 5013)]