21613431

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{2851}}^1$

素因数の和:2899

約数の個数: 24

約数和(自身を含む): 34771584

約数和(自身を除く): 13158153

約数列:

[1, 3, 7, 19, 21, 57, 133, 361, 399, 1083, 2527, 2851, 7581, 8553, 19957, 54169, 59871, 162507, 379183, 1029211, 1137549, 3087633, 7204477, 21613431]

約数ペア:

[(1, 21613431), (3, 7204477), (7, 3087633), (19, 1137549), (21, 1029211), (57, 379183), (133, 162507), (361, 59871), (399, 54169), (1083, 19957), (2527, 8553), (2851, 7581)]