20509581

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{4297}}^1$

素因数の和:4380

約数の個数: 16

約数和(自身を含む): 28745024

約数和(自身を除く): 8235443

約数列:

[1, 3, 37, 43, 111, 129, 1591, 4297, 4773, 12891, 158989, 184771, 476967, 554313, 6836527, 20509581]

約数ペア:

[(1, 20509581), (3, 6836527), (37, 554313), (43, 476967), (111, 184771), (129, 158989), (1591, 12891), (4297, 4773)]