19984539

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{4909}}^1$

素因数の和:4994

約数の個数: 16

約数和(自身を含む): 28281600

約数和(自身を除く): 8297061

約数列:

[1, 3, 23, 59, 69, 177, 1357, 4071, 4909, 14727, 112907, 289631, 338721, 868893, 6661513, 19984539]

約数ペア:

[(1, 19984539), (3, 6661513), (23, 868893), (59, 338721), (69, 289631), (177, 112907), (1357, 14727), (4071, 4909)]