213520420

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{54193}}^1$

素因数の和:54399

約数の個数: 24

約数和(自身を含む): 450677304

約数和(自身を除く): 237156884

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 54193, 108386, 216772, 270965, 541930, 1083860, 10676021, 21352042, 42704084, 53380105, 106760210, 213520420]

約数ペア:

[(1, 213520420), (2, 106760210), (4, 53380105), (5, 42704084), (10, 21352042), (20, 10676021), (197, 1083860), (394, 541930), (788, 270965), (985, 216772), (1970, 108386), (3940, 54193)]