20686448

素因数分解:

$2^4\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:369

約数の個数: 40

約数和(自身を含む): 41292000

約数和(自身を除く): 20605552

約数列:

[1, 2, 4, 8, 16, 73, 89, 146, 178, 199, 292, 356, 398, 584, 712, 796, 1168, 1424, 1592, 3184, 6497, 12994, 14527, 17711, 25988, 29054, 35422, 51976, 58108, 70844, 103952, 116216, 141688, 232432, 283376, 1292903, 2585806, 5171612, 10343224, 20686448]

約数ペア:

[(1, 20686448), (2, 10343224), (4, 5171612), (8, 2585806), (16, 1292903), (73, 283376), (89, 232432), (146, 141688), (178, 116216), (199, 103952), (292, 70844), (356, 58108), (398, 51976), (584, 35422), (712, 29054), (796, 25988), (1168, 17711), (1424, 14527), (1592, 12994), (3184, 6497)]