128552823

素因数分解:

$3^2\times 7^2\times {\mathrm{291503}}^1$

素因数の和:291523

約数の個数: 18

約数和(自身を含む): 216004464

約数和(自身を除く): 87451641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 291503, 874509, 2040521, 2623527, 6121563, 14283647, 18364689, 42850941, 128552823]

約数ペア:

[(1, 128552823), (3, 42850941), (7, 18364689), (9, 14283647), (21, 6121563), (49, 2623527), (63, 2040521), (147, 874509), (441, 291503)]