639306

素因数分解:

$2^1\times 3^3\times {\mathrm{11839}}^1$

素因数の和:11850

約数の個数: 16

約数和(自身を含む): 1420800

約数和(自身を除く): 781494

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 11839, 23678, 35517, 71034, 106551, 213102, 319653, 639306]

約数ペア:

[(1, 639306), (2, 319653), (3, 213102), (6, 106551), (9, 71034), (18, 35517), (27, 23678), (54, 11839)]