28349881

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{823}}^1$

素因数の和:893

約数の個数: 24

約数和(自身を含む): 35695680

約数和(自身を除く): 7345799

約数列:

[1, 7, 19, 37, 49, 133, 259, 703, 823, 931, 1813, 4921, 5761, 15637, 30451, 34447, 40327, 109459, 213157, 578569, 766213, 1492099, 4049983, 28349881]

約数ペア:

[(1, 28349881), (7, 4049983), (19, 1492099), (37, 766213), (49, 578569), (133, 213157), (259, 109459), (703, 40327), (823, 34447), (931, 30451), (1813, 15637), (4921, 5761)]