20718256

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{99607}}^1$

素因数の和:99628

約数の個数: 20

約数和(自身を含む): 43229872

約数和(自身を除く): 22511616

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 99607, 199214, 398428, 796856, 1294891, 1593712, 2589782, 5179564, 10359128, 20718256]

約数ペア:

[(1, 20718256), (2, 10359128), (4, 5179564), (8, 2589782), (13, 1593712), (16, 1294891), (26, 796856), (52, 398428), (104, 199214), (208, 99607)]