181661560

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{28927}}^1$

素因数の和:29095

約数の個数: 32

約数和(自身を含む): 411356160

約数和(自身を除く): 229694600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 6280, 28927, 57854, 115708, 144635, 231416, 289270, 578540, 1157080, 4541539, 9083078, 18166156, 22707695, 36332312, 45415390, 90830780, 181661560]

約数ペア:

[(1, 181661560), (2, 90830780), (4, 45415390), (5, 36332312), (8, 22707695), (10, 18166156), (20, 9083078), (40, 4541539), (157, 1157080), (314, 578540), (628, 289270), (785, 231416), (1256, 144635), (1570, 115708), (3140, 57854), (6280, 28927)]