21530007

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{1291}}^1$

素因数の和:1423

約数の個数: 24

約数和(自身を含む): 33256080

約数和(自身を除く): 11726073

約数列:

[1, 3, 9, 17, 51, 109, 153, 327, 981, 1291, 1853, 3873, 5559, 11619, 16677, 21947, 65841, 140719, 197523, 422157, 1266471, 2392223, 7176669, 21530007]

約数ペア:

[(1, 21530007), (3, 7176669), (9, 2392223), (17, 1266471), (51, 422157), (109, 197523), (153, 140719), (327, 65841), (981, 21947), (1291, 16677), (1853, 11619), (3873, 5559)]