20690180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{147787}}^1$

素因数の和:147803

約数の個数: 24

約数和(自身を含む): 49656768

約数和(自身を除く): 28966588

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 147787, 295574, 591148, 738935, 1034509, 1477870, 2069018, 2955740, 4138036, 5172545, 10345090, 20690180]

約数ペア:

[(1, 20690180), (2, 10345090), (4, 5172545), (5, 4138036), (7, 2955740), (10, 2069018), (14, 1477870), (20, 1034509), (28, 738935), (35, 591148), (70, 295574), (140, 147787)]