251019920

素因数分解:

$2^4\times 5^1\times {\mathrm{3137749}}^1$

素因数の和:3137762

約数の個数: 20

約数和(自身を含む): 583621500

約数和(自身を除く): 332601580

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3137749, 6275498, 12550996, 15688745, 25101992, 31377490, 50203984, 62754980, 125509960, 251019920]

約数ペア:

[(1, 251019920), (2, 125509960), (4, 62754980), (5, 50203984), (8, 31377490), (10, 25101992), (16, 15688745), (20, 12550996), (40, 6275498), (80, 3137749)]