20168824

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2179}}^1$

素因数の和:2287

約数の個数: 32

約数和(自身を含む): 41202000

約数和(自身を除く): 21033176

約数列:

[1, 2, 4, 8, 13, 26, 52, 89, 104, 178, 356, 712, 1157, 2179, 2314, 4358, 4628, 8716, 9256, 17432, 28327, 56654, 113308, 193931, 226616, 387862, 775724, 1551448, 2521103, 5042206, 10084412, 20168824]

約数ペア:

[(1, 20168824), (2, 10084412), (4, 5042206), (8, 2521103), (13, 1551448), (26, 775724), (52, 387862), (89, 226616), (104, 193931), (178, 113308), (356, 56654), (712, 28327), (1157, 17432), (2179, 9256), (2314, 8716), (4358, 4628)]