21801872

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9803}}^1$

素因数の和:9950

約数の個数: 20

約数和(自身を含む): 42549360

約数和(自身を除く): 20747488

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9803, 19606, 39212, 78424, 156848, 1362617, 2725234, 5450468, 10900936, 21801872]

約数ペア:

[(1, 21801872), (2, 10900936), (4, 5450468), (8, 2725234), (16, 1362617), (139, 156848), (278, 78424), (556, 39212), (1112, 19606), (2224, 9803)]