21783916

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{661}}^1$

素因数の和:790

約数の個数: 48

約数和(自身を含む): 48045312

約数和(自身を除く): 26261396

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 107, 154, 214, 308, 428, 661, 749, 1177, 1322, 1498, 2354, 2644, 2996, 4627, 4708, 7271, 8239, 9254, 14542, 16478, 18508, 29084, 32956, 50897, 70727, 101794, 141454, 203588, 282908, 495089, 777997, 990178, 1555994, 1980356, 3111988, 5445979, 10891958, 21783916]

約数ペア:

[(1, 21783916), (2, 10891958), (4, 5445979), (7, 3111988), (11, 1980356), (14, 1555994), (22, 990178), (28, 777997), (44, 495089), (77, 282908), (107, 203588), (154, 141454), (214, 101794), (308, 70727), (428, 50897), (661, 32956), (749, 29084), (1177, 18508), (1322, 16478), (1498, 14542), (2354, 9254), (2644, 8239), (2996, 7271), (4627, 4708)]