128771860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{919799}}^1$

素因数の和:919815

約数の個数: 24

約数和(自身を含む): 309052800

約数和(自身を除く): 180280940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 919799, 1839598, 3679196, 4598995, 6438593, 9197990, 12877186, 18395980, 25754372, 32192965, 64385930, 128771860]

約数ペア:

[(1, 128771860), (2, 64385930), (4, 32192965), (5, 25754372), (7, 18395980), (10, 12877186), (14, 9197990), (20, 6438593), (28, 4598995), (35, 3679196), (70, 1839598), (140, 919799)]