84284780

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{47351}}^1$

素因数の和:47449

約数の個数: 24

約数和(自身を含む): 178990560

約数和(自身を除く): 94705780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 47351, 94702, 189404, 236755, 473510, 947020, 4214239, 8428478, 16856956, 21071195, 42142390, 84284780]

約数ペア:

[(1, 84284780), (2, 42142390), (4, 21071195), (5, 16856956), (10, 8428478), (20, 4214239), (89, 947020), (178, 473510), (356, 236755), (445, 189404), (890, 94702), (1780, 47351)]