21521276

素因数分解:

$2^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{10529}}^1$

素因数の和:10613

約数の個数: 24

約数和(自身を含む): 43636320

約数和(自身を除く): 22115044

約数列:

[1, 2, 4, 7, 14, 28, 73, 146, 292, 511, 1022, 2044, 10529, 21058, 42116, 73703, 147406, 294812, 768617, 1537234, 3074468, 5380319, 10760638, 21521276]

約数ペア:

[(1, 21521276), (2, 10760638), (4, 5380319), (7, 3074468), (14, 1537234), (28, 768617), (73, 294812), (146, 147406), (292, 73703), (511, 42116), (1022, 21058), (2044, 10529)]