21488216

素因数分解:

$2^3\times {\mathrm{97}}^1\times {\mathrm{27691}}^1$

素因数の和:27794

約数の個数: 16

約数和(自身を含む): 40707240

約数和(自身を除く): 19219024

約数列:

[1, 2, 4, 8, 97, 194, 388, 776, 27691, 55382, 110764, 221528, 2686027, 5372054, 10744108, 21488216]

約数ペア:

[(1, 21488216), (2, 10744108), (4, 5372054), (8, 2686027), (97, 221528), (194, 110764), (388, 55382), (776, 27691)]