7981155

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1949}}^1$

素因数の和:1980

約数の個数: 48

約数和(自身を含む): 17035200

約数和(自身を除く): 9054045

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 63, 65, 91, 105, 117, 195, 273, 315, 455, 585, 819, 1365, 1949, 4095, 5847, 9745, 13643, 17541, 25337, 29235, 40929, 68215, 76011, 87705, 122787, 126685, 177359, 204645, 228033, 380055, 532077, 613935, 886795, 1140165, 1596231, 2660385, 7981155]

約数ペア:

[(1, 7981155), (3, 2660385), (5, 1596231), (7, 1140165), (9, 886795), (13, 613935), (15, 532077), (21, 380055), (35, 228033), (39, 204645), (45, 177359), (63, 126685), (65, 122787), (91, 87705), (105, 76011), (117, 68215), (195, 40929), (273, 29235), (315, 25337), (455, 17541), (585, 13643), (819, 9745), (1365, 5847), (1949, 4095)]