19664981

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{743}}^1$

素因数の和:968

約数の個数: 16

約数和(自身を含む): 23808000

約数和(自身を除く): 4143019

約数列:

[1, 7, 19, 133, 199, 743, 1393, 3781, 5201, 14117, 26467, 98819, 147857, 1034999, 2809283, 19664981]

約数ペア:

[(1, 19664981), (7, 2809283), (19, 1034999), (133, 147857), (199, 98819), (743, 26467), (1393, 14117), (3781, 5201)]