20867795

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{277}}^1$

素因数の和:375

約数の個数: 32

約数和(自身を含む): 28956480

約数和(自身を除く): 8088685

約数列:

[1, 5, 13, 19, 61, 65, 95, 247, 277, 305, 793, 1159, 1235, 1385, 3601, 3965, 5263, 5795, 15067, 16897, 18005, 26315, 68419, 75335, 84485, 219661, 321043, 342095, 1098305, 1605215, 4173559, 20867795]

約数ペア:

[(1, 20867795), (5, 4173559), (13, 1605215), (19, 1098305), (61, 342095), (65, 321043), (95, 219661), (247, 84485), (277, 75335), (305, 68419), (793, 26315), (1159, 18005), (1235, 16897), (1385, 15067), (3601, 5795), (3965, 5263)]