18900910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{3803}}^1$

素因数の和:3888

約数の個数: 32

約数和(自身を含む): 39439872

約数和(自身を除く): 20538962

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 71, 142, 355, 497, 710, 994, 2485, 3803, 4970, 7606, 19015, 26621, 38030, 53242, 133105, 266210, 270013, 540026, 1350065, 1890091, 2700130, 3780182, 9450455, 18900910]

約数ペア:

[(1, 18900910), (2, 9450455), (5, 3780182), (7, 2700130), (10, 1890091), (14, 1350065), (35, 540026), (70, 270013), (71, 266210), (142, 133105), (355, 53242), (497, 38030), (710, 26621), (994, 19015), (2485, 7606), (3803, 4970)]