20763920

素因数分解:

$2^4\times 5^1\times {\mathrm{277}}^1\times {\mathrm{937}}^1$

素因数の和:1227

約数の個数: 40

約数和(自身を含む): 48502104

約数和(自身を除く): 27738184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 277, 554, 937, 1108, 1385, 1874, 2216, 2770, 3748, 4432, 4685, 5540, 7496, 9370, 11080, 14992, 18740, 22160, 37480, 74960, 259549, 519098, 1038196, 1297745, 2076392, 2595490, 4152784, 5190980, 10381960, 20763920]

約数ペア:

[(1, 20763920), (2, 10381960), (4, 5190980), (5, 4152784), (8, 2595490), (10, 2076392), (16, 1297745), (20, 1038196), (40, 519098), (80, 259549), (277, 74960), (554, 37480), (937, 22160), (1108, 18740), (1385, 14992), (1874, 11080), (2216, 9370), (2770, 7496), (3748, 5540), (4432, 4685)]