19991754

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{15643}}^1$

素因数の和:15722

約数の個数: 24

約数和(自身を含む): 43928352

約数和(自身を除く): 23936598

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 15643, 31286, 46929, 93858, 140787, 281574, 1110653, 2221306, 3331959, 6663918, 9995877, 19991754]

約数ペア:

[(1, 19991754), (2, 9995877), (3, 6663918), (6, 3331959), (9, 2221306), (18, 1110653), (71, 281574), (142, 140787), (213, 93858), (426, 46929), (639, 31286), (1278, 15643)]