18653648

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{89681}}^1$

素因数の和:89702

約数の個数: 20

約数和(自身を含む): 38921988

約数和(自身を除く): 20268340

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 89681, 179362, 358724, 717448, 1165853, 1434896, 2331706, 4663412, 9326824, 18653648]

約数ペア:

[(1, 18653648), (2, 9326824), (4, 4663412), (8, 2331706), (13, 1434896), (16, 1165853), (26, 717448), (52, 358724), (104, 179362), (208, 89681)]