199977980

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{98999}}^1$

素因数の和:99109

約数の個数: 24

約数和(自身を含む): 424116000

約数和(自身を除く): 224138020

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 98999, 197998, 395996, 494995, 989990, 1979980, 9998899, 19997798, 39995596, 49994495, 99988990, 199977980]

約数ペア:

[(1, 199977980), (2, 99988990), (4, 49994495), (5, 39995596), (10, 19997798), (20, 9998899), (101, 1979980), (202, 989990), (404, 494995), (505, 395996), (1010, 197998), (2020, 98999)]