18971836

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{919}}^1$

素因数の和:1333

約数の個数: 24

約数和(自身を含む): 35883680

約数和(自身を除く): 16911844

約数列:

[1, 2, 4, 13, 26, 52, 397, 794, 919, 1588, 1838, 3676, 5161, 10322, 11947, 20644, 23894, 47788, 364843, 729686, 1459372, 4742959, 9485918, 18971836]

約数ペア:

[(1, 18971836), (2, 9485918), (4, 4742959), (13, 1459372), (26, 729686), (52, 364843), (397, 47788), (794, 23894), (919, 20644), (1588, 11947), (1838, 10322), (3676, 5161)]