21643972

素因数分解:

$2^2\times 7^1\times {\mathrm{563}}^1\times {\mathrm{1373}}^1$

素因数の和:1947

約数の個数: 24

約数和(自身を含む): 43396416

約数和(自身を除く): 21752444

約数列:

[1, 2, 4, 7, 14, 28, 563, 1126, 1373, 2252, 2746, 3941, 5492, 7882, 9611, 15764, 19222, 38444, 772999, 1545998, 3091996, 5410993, 10821986, 21643972]

約数ペア:

[(1, 21643972), (2, 10821986), (4, 5410993), (7, 3091996), (14, 1545998), (28, 772999), (563, 38444), (1126, 19222), (1373, 15764), (2252, 9611), (2746, 7882), (3941, 5492)]