20218617

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{349}}^1$

素因数の和:553

約数の個数: 24

約数和(自身を含む): 30193800

約数和(自身を除く): 9975183

約数列:

[1, 3, 9, 41, 123, 157, 349, 369, 471, 1047, 1413, 3141, 6437, 14309, 19311, 42927, 54793, 57933, 128781, 164379, 493137, 2246513, 6739539, 20218617]

約数ペア:

[(1, 20218617), (3, 6739539), (9, 2246513), (41, 493137), (123, 164379), (157, 128781), (349, 57933), (369, 54793), (471, 42927), (1047, 19311), (1413, 14309), (3141, 6437)]