21947368

素因数分解:

$2^3\times {\mathrm{109}}^1\times {\mathrm{25169}}^1$

素因数の和:25284

約数の個数: 16

約数和(自身を含む): 41530500

約数和(自身を除く): 19583132

約数列:

[1, 2, 4, 8, 109, 218, 436, 872, 25169, 50338, 100676, 201352, 2743421, 5486842, 10973684, 21947368]

約数ペア:

[(1, 21947368), (2, 10973684), (4, 5486842), (8, 2743421), (109, 201352), (218, 100676), (436, 50338), (872, 25169)]