21978842

素因数分解:

$2^1\times {\mathrm{97}}^1\times {\mathrm{277}}^1\times {\mathrm{409}}^1$

素因数の和:785

約数の個数: 16

約数和(自身を含む): 33510120

約数和(自身を除く): 11531278

約数列:

[1, 2, 97, 194, 277, 409, 554, 818, 26869, 39673, 53738, 79346, 113293, 226586, 10989421, 21978842]

約数ペア:

[(1, 21978842), (2, 10989421), (97, 226586), (194, 113293), (277, 79346), (409, 53738), (554, 39673), (818, 26869)]