78823280

素因数分解:

$2^4\times 5^1\times {\mathrm{985291}}^1$

素因数の和:985304

約数の個数: 20

約数和(自身を含む): 183264312

約数和(自身を除く): 104441032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 985291, 1970582, 3941164, 4926455, 7882328, 9852910, 15764656, 19705820, 39411640, 78823280]

約数ペア:

[(1, 78823280), (2, 39411640), (4, 19705820), (5, 15764656), (8, 9852910), (10, 7882328), (16, 4926455), (20, 3941164), (40, 1970582), (80, 985291)]