19743824

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{11321}}^1$

素因数の和:11438

約数の個数: 20

約数和(自身を含む): 38608020

約数和(自身を除く): 18864196

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 11321, 22642, 45284, 90568, 181136, 1233989, 2467978, 4935956, 9871912, 19743824]

約数ペア:

[(1, 19743824), (2, 9871912), (4, 4935956), (8, 2467978), (16, 1233989), (109, 181136), (218, 90568), (436, 45284), (872, 22642), (1744, 11321)]