18978890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{271127}}^1$

素因数の和:271141

約数の個数: 16

約数和(自身を含む): 39042432

約数和(自身を除く): 20063542

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 271127, 542254, 1355635, 1897889, 2711270, 3795778, 9489445, 18978890]

約数ペア:

[(1, 18978890), (2, 9489445), (5, 3795778), (7, 2711270), (10, 1897889), (14, 1355635), (35, 542254), (70, 271127)]