198538820

素因数分解:

$2^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{22109}}^1$

素因数の和:22567

約数の個数: 24

約数和(自身を含む): 417879000

約数和(自身を除く): 219340180

約数列:

[1, 2, 4, 5, 10, 20, 449, 898, 1796, 2245, 4490, 8980, 22109, 44218, 88436, 110545, 221090, 442180, 9926941, 19853882, 39707764, 49634705, 99269410, 198538820]

約数ペア:

[(1, 198538820), (2, 99269410), (4, 49634705), (5, 39707764), (10, 19853882), (20, 9926941), (449, 442180), (898, 221090), (1796, 110545), (2245, 88436), (4490, 44218), (8980, 22109)]