205700985

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1997}}^1$

素因数の和:2127

約数の個数: 64

約数和(自身を含む): 421977600

約数和(自身を除く): 216276615

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 109, 135, 189, 315, 327, 545, 763, 945, 981, 1635, 1997, 2289, 2943, 3815, 4905, 5991, 6867, 9985, 11445, 13979, 14715, 17973, 20601, 29955, 34335, 41937, 53919, 69895, 89865, 103005, 125811, 209685, 217673, 269595, 377433, 629055, 653019, 1088365, 1523711, 1887165, 1959057, 3265095, 4571133, 5877171, 7618555, 9795285, 13713399, 22855665, 29385855, 41140197, 68566995, 205700985]

約数ペア:

[(1, 205700985), (3, 68566995), (5, 41140197), (7, 29385855), (9, 22855665), (15, 13713399), (21, 9795285), (27, 7618555), (35, 5877171), (45, 4571133), (63, 3265095), (105, 1959057), (109, 1887165), (135, 1523711), (189, 1088365), (315, 653019), (327, 629055), (545, 377433), (763, 269595), (945, 217673), (981, 209685), (1635, 125811), (1997, 103005), (2289, 89865), (2943, 69895), (3815, 53919), (4905, 41937), (5991, 34335), (6867, 29955), (9985, 20601), (11445, 17973), (13979, 14715)]