20807960

素因数分解:

$2^3\times 5^1\times {\mathrm{607}}^1\times {\mathrm{857}}^1$

素因数の和:1475

約数の個数: 32

約数和(自身を含む): 46949760

約数和(自身を除く): 26141800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 607, 857, 1214, 1714, 2428, 3035, 3428, 4285, 4856, 6070, 6856, 8570, 12140, 17140, 24280, 34280, 520199, 1040398, 2080796, 2600995, 4161592, 5201990, 10403980, 20807960]

約数ペア:

[(1, 20807960), (2, 10403980), (4, 5201990), (5, 4161592), (8, 2600995), (10, 2080796), (20, 1040398), (40, 520199), (607, 34280), (857, 24280), (1214, 17140), (1714, 12140), (2428, 8570), (3035, 6856), (3428, 6070), (4285, 4856)]