18390820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131363}}^1$

素因数の和:131379

約数の個数: 24

約数和(自身を含む): 44138304

約数和(自身を除く): 25747484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 131363, 262726, 525452, 656815, 919541, 1313630, 1839082, 2627260, 3678164, 4597705, 9195410, 18390820]

約数ペア:

[(1, 18390820), (2, 9195410), (4, 4597705), (5, 3678164), (7, 2627260), (10, 1839082), (14, 1313630), (20, 919541), (28, 656815), (35, 525452), (70, 262726), (140, 131363)]