21630220

素因数分解:

$2^2\times 5^1\times {\mathrm{673}}^1\times {\mathrm{1607}}^1$

素因数の和:2289

約数の個数: 24

約数和(自身を含む): 45519264

約数和(自身を除く): 23889044

約数列:

[1, 2, 4, 5, 10, 20, 673, 1346, 1607, 2692, 3214, 3365, 6428, 6730, 8035, 13460, 16070, 32140, 1081511, 2163022, 4326044, 5407555, 10815110, 21630220]

約数ペア:

[(1, 21630220), (2, 10815110), (4, 5407555), (5, 4326044), (10, 2163022), (20, 1081511), (673, 32140), (1346, 16070), (1607, 13460), (2692, 8035), (3214, 6730), (3365, 6428)]