21745904

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{15271}}^1$

素因数の和:15368

約数の個数: 20

約数和(自身を含む): 42608880

約数和(自身を除く): 20862976

約数列:

[1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 15271, 30542, 61084, 122168, 244336, 1359119, 2718238, 5436476, 10872952, 21745904]

約数ペア:

[(1, 21745904), (2, 10872952), (4, 5436476), (8, 2718238), (16, 1359119), (89, 244336), (178, 122168), (356, 61084), (712, 30542), (1424, 15271)]