20228656

素因数分解:

$2^4\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1657}}^1$

素因数の和:1781

約数の個数: 40

約数和(自身を含む): 45230240

約数和(自身を除く): 25001584

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 109, 112, 218, 436, 763, 872, 1526, 1657, 1744, 3052, 3314, 6104, 6628, 11599, 12208, 13256, 23198, 26512, 46396, 92792, 180613, 185584, 361226, 722452, 1264291, 1444904, 2528582, 2889808, 5057164, 10114328, 20228656]

約数ペア:

[(1, 20228656), (2, 10114328), (4, 5057164), (7, 2889808), (8, 2528582), (14, 1444904), (16, 1264291), (28, 722452), (56, 361226), (109, 185584), (112, 180613), (218, 92792), (436, 46396), (763, 26512), (872, 23198), (1526, 13256), (1657, 12208), (1744, 11599), (3052, 6628), (3314, 6104)]