19881242

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1\times {\mathrm{1523}}^1$

素因数の和:1693

約数の個数: 16

約数和(自身を含む): 30614112

約数和(自身を除く): 10732870

約数列:

[1, 2, 61, 107, 122, 214, 1523, 3046, 6527, 13054, 92903, 162961, 185806, 325922, 9940621, 19881242]

約数ペア:

[(1, 19881242), (2, 9940621), (61, 325922), (107, 185806), (122, 162961), (214, 92903), (1523, 13054), (3046, 6527)]