21438287185

素因数分解:

$5^1\times 7^3\times {\mathrm{12500459}}^1$

素因数の和:12500485

約数の個数: 16

約数和(自身を含む): 30001104000

約数和(自身を除く): 8562816815

約数列:

[1, 5, 7, 35, 49, 245, 343, 1715, 12500459, 62502295, 87503213, 437516065, 612522491, 3062612455, 4287657437, 21438287185]

約数ペア:

[(1, 21438287185), (5, 4287657437), (7, 3062612455), (35, 612522491), (49, 437516065), (245, 87503213), (343, 62502295), (1715, 12500459)]