217940380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1556717}}^1$

素因数の和:1556733

約数の個数: 24

約数和(自身を含む): 523057248

約数和(自身を除く): 305116868

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1556717, 3113434, 6226868, 7783585, 10897019, 15567170, 21794038, 31134340, 43588076, 54485095, 108970190, 217940380]

約数ペア:

[(1, 217940380), (2, 108970190), (4, 54485095), (5, 43588076), (7, 31134340), (10, 21794038), (14, 15567170), (20, 10897019), (28, 7783585), (35, 6226868), (70, 3113434), (140, 1556717)]