19988021212

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{56146127}}^1$

素因数の和:56146220

約数の個数: 12

約数和(自身を含む): 35372060640

約数和(自身を除く): 15384039428

約数列:

[1, 2, 4, 89, 178, 356, 56146127, 112292254, 224584508, 4997005303, 9994010606, 19988021212]

約数ペア:

[(1, 19988021212), (2, 9994010606), (4, 4997005303), (89, 224584508), (178, 112292254), (356, 56146127)]