165725680

素因数分解:

$2^4\times 5^1\times {\mathrm{311}}^1\times {\mathrm{6661}}^1$

素因数の和:6985

約数の個数: 40

約数和(自身を含む): 386609184

約数和(自身を除く): 220883504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 311, 622, 1244, 1555, 2488, 3110, 4976, 6220, 6661, 12440, 13322, 24880, 26644, 33305, 53288, 66610, 106576, 133220, 266440, 532880, 2071571, 4143142, 8286284, 10357855, 16572568, 20715710, 33145136, 41431420, 82862840, 165725680]

約数ペア:

[(1, 165725680), (2, 82862840), (4, 41431420), (5, 33145136), (8, 20715710), (10, 16572568), (16, 10357855), (20, 8286284), (40, 4143142), (80, 2071571), (311, 532880), (622, 266440), (1244, 133220), (1555, 106576), (2488, 66610), (3110, 53288), (4976, 33305), (6220, 26644), (6661, 24880), (12440, 13322)]