21979972

素因数分解:

$2^2\times 7^1\times {\mathrm{307}}^1\times {\mathrm{2557}}^1$

素因数の和:2875

約数の個数: 24

約数和(自身を含む): 44120384

約数和(自身を除く): 22140412

約数列:

[1, 2, 4, 7, 14, 28, 307, 614, 1228, 2149, 2557, 4298, 5114, 8596, 10228, 17899, 35798, 71596, 784999, 1569998, 3139996, 5494993, 10989986, 21979972]

約数ペア:

[(1, 21979972), (2, 10989986), (4, 5494993), (7, 3139996), (14, 1569998), (28, 784999), (307, 71596), (614, 35798), (1228, 17899), (2149, 10228), (2557, 8596), (4298, 5114)]