20565285

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{401}}^1$

素因数の和:685

約数の個数: 32

約数和(自身を含む): 35659008

約数和(自身を除く): 15093723

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 263, 401, 789, 1203, 1315, 2005, 3419, 3945, 5213, 6015, 10257, 15639, 17095, 26065, 51285, 78195, 105463, 316389, 527315, 1371019, 1581945, 4113057, 6855095, 20565285]

約数ペア:

[(1, 20565285), (3, 6855095), (5, 4113057), (13, 1581945), (15, 1371019), (39, 527315), (65, 316389), (195, 105463), (263, 78195), (401, 51285), (789, 26065), (1203, 17095), (1315, 15639), (2005, 10257), (3419, 6015), (3945, 5213)]