20199995

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{2221}}^1$

素因数の和:2350

約数の個数: 16

約数和(自身を含む): 25917408

約数和(自身を除く): 5717413

約数列:

[1, 5, 17, 85, 107, 535, 1819, 2221, 9095, 11105, 37757, 188785, 237647, 1188235, 4039999, 20199995]

約数ペア:

[(1, 20199995), (5, 4039999), (17, 1188235), (85, 237647), (107, 188785), (535, 37757), (1819, 11105), (2221, 9095)]