81605860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{582899}}^1$

素因数の和:582915

約数の個数: 24

約数和(自身を含む): 195854400

約数和(自身を除く): 114248540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 582899, 1165798, 2331596, 2914495, 4080293, 5828990, 8160586, 11657980, 16321172, 20401465, 40802930, 81605860]

約数ペア:

[(1, 81605860), (2, 40802930), (4, 20401465), (5, 16321172), (7, 11657980), (10, 8160586), (14, 5828990), (20, 4080293), (28, 2914495), (35, 2331596), (70, 1165798), (140, 582899)]