19664515

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{4261}}^1$

素因数の和:4350

約数の個数: 16

約数和(自身を含む): 25776576

約数和(自身を除く): 6112061

約数列:

[1, 5, 13, 65, 71, 355, 923, 4261, 4615, 21305, 55393, 276965, 302531, 1512655, 3932903, 19664515]

約数ペア:

[(1, 19664515), (5, 3932903), (13, 1512655), (65, 302531), (71, 276965), (355, 55393), (923, 21305), (4261, 4615)]