20879803

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{4243}}^1$

素因数の和:4306

約数の個数: 16

約数和(自身を含む): 25803520

約数和(自身を除く): 4923717

約数列:

[1, 7, 19, 37, 133, 259, 703, 4243, 4921, 29701, 80617, 156991, 564319, 1098937, 2982829, 20879803]

約数ペア:

[(1, 20879803), (7, 2982829), (19, 1098937), (37, 564319), (133, 156991), (259, 80617), (703, 29701), (4243, 4921)]