642740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{4591}}^1$

素因数の和:4607

約数の個数: 24

約数和(自身を含む): 1542912

約数和(自身を除く): 900172

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 4591, 9182, 18364, 22955, 32137, 45910, 64274, 91820, 128548, 160685, 321370, 642740]

約数ペア:

[(1, 642740), (2, 321370), (4, 160685), (5, 128548), (7, 91820), (10, 64274), (14, 45910), (20, 32137), (28, 22955), (35, 18364), (70, 9182), (140, 4591)]