21979012

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{499523}}^1$

素因数の和:499538

約数の個数: 12

約数和(自身を含む): 41960016

約数和(自身を除く): 19981004

約数列:

[1, 2, 4, 11, 22, 44, 499523, 999046, 1998092, 5494753, 10989506, 21979012]

約数ペア:

[(1, 21979012), (2, 10989506), (4, 5494753), (11, 1998092), (22, 999046), (44, 499523)]