138679709

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{641}}^1\times {\mathrm{997}}^1$

素因数の和:1676

約数の個数: 16

約数和(自身を含む): 164023296

約数和(自身を除く): 25343587

約数列:

[1, 7, 31, 217, 641, 997, 4487, 6979, 19871, 30907, 139097, 216349, 639077, 4473539, 19811387, 138679709]

約数ペア:

[(1, 138679709), (7, 19811387), (31, 4473539), (217, 639077), (641, 216349), (997, 139097), (4487, 30907), (6979, 19871)]