19979745

素因数分解:

$3^1\times 5^1\times {\mathrm{373}}^1\times {\mathrm{3571}}^1$

素因数の和:3952

約数の個数: 16

約数和(自身を含む): 32062272

約数和(自身を除く): 12082527

約数列:

[1, 3, 5, 15, 373, 1119, 1865, 3571, 5595, 10713, 17855, 53565, 1331983, 3995949, 6659915, 19979745]

約数ペア:

[(1, 19979745), (3, 6659915), (5, 3995949), (15, 1331983), (373, 53565), (1119, 17855), (1865, 10713), (3571, 5595)]