199779993

素因数分解:

$3^3\times 7^1\times {\mathrm{1057037}}^1$

素因数の和:1057053

約数の個数: 16

約数和(自身を含む): 338252160

約数和(自身を除く): 138472167

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 1057037, 3171111, 7399259, 9513333, 22197777, 28539999, 66593331, 199779993]

約数ペア:

[(1, 199779993), (3, 66593331), (7, 28539999), (9, 22197777), (21, 9513333), (27, 7399259), (63, 3171111), (189, 1057037)]