1999565560

素因数分解:

$2^3\times 5^1\times {\mathrm{49989139}}^1$

素因数の和:49989150

約数の個数: 16

約数和(自身を含む): 4499022600

約数和(自身を除く): 2499457040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 49989139, 99978278, 199956556, 249945695, 399913112, 499891390, 999782780, 1999565560]

約数ペア:

[(1, 1999565560), (2, 999782780), (4, 499891390), (5, 399913112), (8, 249945695), (10, 199956556), (20, 99978278), (40, 49989139)]