20199895

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{1999}}^1$

素因数の和:2094

約数の個数: 16

約数和(自身を含む): 25344000

約数和(自身を除く): 5144105

約数列:

[1, 5, 43, 47, 215, 235, 1999, 2021, 9995, 10105, 85957, 93953, 429785, 469765, 4039979, 20199895]

約数ペア:

[(1, 20199895), (5, 4039979), (43, 469765), (47, 429785), (215, 93953), (235, 85957), (1999, 10105), (2021, 9995)]