78820570

素因数分解:

$2^1\times 5^1\times {\mathrm{1999}}^1\times {\mathrm{3943}}^1$

素因数の和:5949

約数の個数: 16

約数和(自身を含む): 141984000

約数和(自身を除く): 63163430

約数列:

[1, 2, 5, 10, 1999, 3943, 3998, 7886, 9995, 19715, 19990, 39430, 7882057, 15764114, 39410285, 78820570]

約数ペア:

[(1, 78820570), (2, 39410285), (5, 15764114), (10, 7882057), (1999, 39430), (3943, 19990), (3998, 19715), (7886, 9995)]