139980260

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{142837}}^1$

素因数の和:142860

約数の個数: 36

約数和(自身を含む): 341954172

約数和(自身を除く): 201973912

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 142837, 285674, 571348, 714185, 999859, 1428370, 1999718, 2856740, 3999436, 4999295, 6999013, 9998590, 13998026, 19997180, 27996052, 34995065, 69990130, 139980260]

約数ペア:

[(1, 139980260), (2, 69990130), (4, 34995065), (5, 27996052), (7, 19997180), (10, 13998026), (14, 9998590), (20, 6999013), (28, 4999295), (35, 3999436), (49, 2856740), (70, 1999718), (98, 1428370), (140, 999859), (196, 714185), (245, 571348), (490, 285674), (980, 142837)]