19508951

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{743}}^1$

素因数の和:803

約数の個数: 24

約数和(自身を含む): 25331712

約数和(自身を除く): 5822761

約数列:

[1, 7, 11, 31, 77, 121, 217, 341, 743, 847, 2387, 3751, 5201, 8173, 23033, 26257, 57211, 89903, 161231, 253363, 629321, 1773541, 2786993, 19508951]

約数ペア:

[(1, 19508951), (7, 2786993), (11, 1773541), (31, 629321), (77, 253363), (121, 161231), (217, 89903), (341, 57211), (743, 26257), (847, 23033), (2387, 8173), (3751, 5201)]