21975604

素因数分解:

$2^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{4999}}^1$

素因数の和:5167

約数の個数: 24

約数和(自身を含む): 44240000

約数和(自身を除く): 22264396

約数列:

[1, 2, 4, 7, 14, 28, 157, 314, 628, 1099, 2198, 4396, 4999, 9998, 19996, 34993, 69986, 139972, 784843, 1569686, 3139372, 5493901, 10987802, 21975604]

約数ペア:

[(1, 21975604), (2, 10987802), (4, 5493901), (7, 3139372), (14, 1569686), (28, 784843), (157, 139972), (314, 69986), (628, 34993), (1099, 19996), (2198, 9998), (4396, 4999)]