21249975

素因数分解:

$3^1\times 5^2\times {\mathrm{421}}^1\times {\mathrm{673}}^1$

素因数の和:1107

約数の個数: 24

約数和(自身を含む): 35269072

約数和(自身を除く): 14019097

約数列:

[1, 3, 5, 15, 25, 75, 421, 673, 1263, 2019, 2105, 3365, 6315, 10095, 10525, 16825, 31575, 50475, 283333, 849999, 1416665, 4249995, 7083325, 21249975]

約数ペア:

[(1, 21249975), (3, 7083325), (5, 4249995), (15, 1416665), (25, 849999), (75, 283333), (421, 50475), (673, 31575), (1263, 16825), (2019, 10525), (2105, 10095), (3365, 6315)]