19944580

素因数分解:

$2^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{2221}}^1$

素因数の和:2679

約数の個数: 24

約数和(自身を含む): 41995800

約数和(自身を除く): 22051220

約数列:

[1, 2, 4, 5, 10, 20, 449, 898, 1796, 2221, 2245, 4442, 4490, 8884, 8980, 11105, 22210, 44420, 997229, 1994458, 3988916, 4986145, 9972290, 19944580]

約数ペア:

[(1, 19944580), (2, 9972290), (4, 4986145), (5, 3988916), (10, 1994458), (20, 997229), (449, 44420), (898, 22210), (1796, 11105), (2221, 8980), (2245, 8884), (4442, 4490)]