20105456

素因数分解:

$2^4\times 7^1\times {\mathrm{89}}^1\times {\mathrm{2017}}^1$

素因数の和:2121

約数の個数: 40

約数和(自身を含む): 45041760

約数和(自身を除く): 24936304

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 89, 112, 178, 356, 623, 712, 1246, 1424, 2017, 2492, 4034, 4984, 8068, 9968, 14119, 16136, 28238, 32272, 56476, 112952, 179513, 225904, 359026, 718052, 1256591, 1436104, 2513182, 2872208, 5026364, 10052728, 20105456]

約数ペア:

[(1, 20105456), (2, 10052728), (4, 5026364), (7, 2872208), (8, 2513182), (14, 1436104), (16, 1256591), (28, 718052), (56, 359026), (89, 225904), (112, 179513), (178, 112952), (356, 56476), (623, 32272), (712, 28238), (1246, 16136), (1424, 14119), (2017, 9968), (2492, 8068), (4034, 4984)]