27580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{197}}^1$

素因数の和:213

約数の個数: 24

約数和(自身を含む): 66528

約数和(自身を除く): 38948

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 197, 394, 788, 985, 1379, 1970, 2758, 3940, 5516, 6895, 13790, 27580]

約数ペア:

[(1, 27580), (2, 13790), (4, 6895), (5, 5516), (7, 3940), (10, 2758), (14, 1970), (20, 1379), (28, 985), (35, 788), (70, 394), (140, 197)]