20749928

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{271}}^1\times {\mathrm{563}}^1$

素因数の和:857

約数の個数: 32

約数和(自身を含む): 41420160

約数和(自身を除く): 20670232

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 271, 542, 563, 1084, 1126, 2168, 2252, 4504, 4607, 9214, 9571, 18428, 19142, 36856, 38284, 76568, 152573, 305146, 610292, 1220584, 2593741, 5187482, 10374964, 20749928]

約数ペア:

[(1, 20749928), (2, 10374964), (4, 5187482), (8, 2593741), (17, 1220584), (34, 610292), (68, 305146), (136, 152573), (271, 76568), (542, 38284), (563, 36856), (1084, 19142), (1126, 18428), (2168, 9571), (2252, 9214), (4504, 4607)]