18889745

素因数分解:

$5^1\times 7^2\times {\mathrm{77101}}^1$

素因数の和:77120

約数の個数: 12

約数和(自身を含む): 26368884

約数和(自身を除く): 7479139

約数列:

[1, 5, 7, 35, 49, 245, 77101, 385505, 539707, 2698535, 3777949, 18889745]

約数ペア:

[(1, 18889745), (5, 3777949), (7, 2698535), (35, 539707), (49, 385505), (245, 77101)]