18939340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{135281}}^1$

素因数の和:135297

約数の個数: 24

約数和(自身を含む): 45454752

約数和(自身を除く): 26515412

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 135281, 270562, 541124, 676405, 946967, 1352810, 1893934, 2705620, 3787868, 4734835, 9469670, 18939340]

約数ペア:

[(1, 18939340), (2, 9469670), (4, 4734835), (5, 3787868), (7, 2705620), (10, 1893934), (14, 1352810), (20, 946967), (28, 676405), (35, 541124), (70, 270562), (140, 135281)]