128464120

素因数分解:

$2^3\times 5^1\times {\mathrm{3211603}}^1$

素因数の和:3211614

約数の個数: 16

約数和(自身を含む): 289044360

約数和(自身を除く): 160580240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3211603, 6423206, 12846412, 16058015, 25692824, 32116030, 64232060, 128464120]

約数ペア:

[(1, 128464120), (2, 64232060), (4, 32116030), (5, 25692824), (8, 16058015), (10, 12846412), (20, 6423206), (40, 3211603)]