21539128

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2917}}^1$

素因数の和:3007

約数の個数: 32

約数和(自身を含む): 44120160

約数和(自身を除く): 22581032

約数列:

[1, 2, 4, 8, 13, 26, 52, 71, 104, 142, 284, 568, 923, 1846, 2917, 3692, 5834, 7384, 11668, 23336, 37921, 75842, 151684, 207107, 303368, 414214, 828428, 1656856, 2692391, 5384782, 10769564, 21539128]

約数ペア:

[(1, 21539128), (2, 10769564), (4, 5384782), (8, 2692391), (13, 1656856), (26, 828428), (52, 414214), (71, 303368), (104, 207107), (142, 151684), (284, 75842), (568, 37921), (923, 23336), (1846, 11668), (2917, 7384), (3692, 5834)]