21609009

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{373}}^1$

素因数の和:577

約数の個数: 24

約数和(自身を含む): 32264232

約数和(自身を除く): 10655223

約数列:

[1, 3, 9, 41, 123, 157, 369, 373, 471, 1119, 1413, 3357, 6437, 15293, 19311, 45879, 57933, 58561, 137637, 175683, 527049, 2401001, 7203003, 21609009]

約数ペア:

[(1, 21609009), (3, 7203003), (9, 2401001), (41, 527049), (123, 175683), (157, 137637), (369, 58561), (373, 57933), (471, 45879), (1119, 19311), (1413, 15293), (3357, 6437)]