19902004

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{4637}}^1$

素因数の和:4707

約数の個数: 24

約数和(自身を含む): 37011240

約数和(自身を除く): 17109236

約数列:

[1, 2, 4, 29, 37, 58, 74, 116, 148, 1073, 2146, 4292, 4637, 9274, 18548, 134473, 171569, 268946, 343138, 537892, 686276, 4975501, 9951002, 19902004]

約数ペア:

[(1, 19902004), (2, 9951002), (4, 4975501), (29, 686276), (37, 537892), (58, 343138), (74, 268946), (116, 171569), (148, 134473), (1073, 18548), (2146, 9274), (4292, 4637)]