20989912

素因数分解:

$2^3\times {\mathrm{109}}^1\times {\mathrm{24071}}^1$

素因数の和:24186

約数の個数: 16

約数和(自身を含む): 39718800

約数和(自身を除く): 18728888

約数列:

[1, 2, 4, 8, 109, 218, 436, 872, 24071, 48142, 96284, 192568, 2623739, 5247478, 10494956, 20989912]

約数ペア:

[(1, 20989912), (2, 10494956), (4, 5247478), (8, 2623739), (109, 192568), (218, 96284), (436, 48142), (872, 24071)]