20781722

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{7333}}^1$

素因数の和:7457

約数の個数: 16

約数和(自身を含む): 33883080

約数和(自身を除く): 13101358

約数列:

[1, 2, 13, 26, 109, 218, 1417, 2834, 7333, 14666, 95329, 190658, 799297, 1598594, 10390861, 20781722]

約数ペア:

[(1, 20781722), (2, 10390861), (13, 1598594), (26, 799297), (109, 190658), (218, 95329), (1417, 14666), (2834, 7333)]