8540440

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2399}}^1$

素因数の和:2499

約数の個数: 32

約数和(自身を含む): 19440000

約数和(自身を除く): 10899560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 2399, 3560, 4798, 9596, 11995, 19192, 23990, 47980, 95960, 213511, 427022, 854044, 1067555, 1708088, 2135110, 4270220, 8540440]

約数ペア:

[(1, 8540440), (2, 4270220), (4, 2135110), (5, 1708088), (8, 1067555), (10, 854044), (20, 427022), (40, 213511), (89, 95960), (178, 47980), (356, 23990), (445, 19192), (712, 11995), (890, 9596), (1780, 4798), (2399, 3560)]