21818660

素因数分解:

$2^2\times 5^1\times {\mathrm{673}}^1\times {\mathrm{1621}}^1$

素因数の和:2303

約数の個数: 24

約数和(自身を含む): 45915576

約数和(自身を除く): 24096916

約数列:

[1, 2, 4, 5, 10, 20, 673, 1346, 1621, 2692, 3242, 3365, 6484, 6730, 8105, 13460, 16210, 32420, 1090933, 2181866, 4363732, 5454665, 10909330, 21818660]

約数ペア:

[(1, 21818660), (2, 10909330), (4, 5454665), (5, 4363732), (10, 2181866), (20, 1090933), (673, 32420), (1346, 16210), (1621, 13460), (2692, 8105), (3242, 6730), (3365, 6484)]