21118168

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{49807}}^1$

素因数の和:49866

約数の個数: 16

約数和(自身を含む): 40344480

約数和(自身を除く): 19226312

約数列:

[1, 2, 4, 8, 53, 106, 212, 424, 49807, 99614, 199228, 398456, 2639771, 5279542, 10559084, 21118168]

約数ペア:

[(1, 21118168), (2, 10559084), (4, 5279542), (8, 2639771), (53, 398456), (106, 199228), (212, 99614), (424, 49807)]