18657443

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{677}}^1$

素因数の和:842

約数の個数: 16

約数和(自身を含む): 22216704

約数和(自身を除く): 3559261

約数列:

[1, 7, 31, 127, 217, 677, 889, 3937, 4739, 20987, 27559, 85979, 146909, 601853, 2665349, 18657443]

約数ペア:

[(1, 18657443), (7, 2665349), (31, 601853), (127, 146909), (217, 85979), (677, 27559), (889, 20987), (3937, 4739)]