21120759

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{317}}^1\times {\mathrm{673}}^1$

素因数の和:1007

約数の個数: 24

約数和(自身を含む): 33435792

約数和(自身を除く): 12315033

約数列:

[1, 3, 9, 11, 33, 99, 317, 673, 951, 2019, 2853, 3487, 6057, 7403, 10461, 22209, 31383, 66627, 213341, 640023, 1920069, 2346751, 7040253, 21120759]

約数ペア:

[(1, 21120759), (3, 7040253), (9, 2346751), (11, 1920069), (33, 640023), (99, 213341), (317, 66627), (673, 31383), (951, 22209), (2019, 10461), (2853, 7403), (3487, 6057)]