408055870

素因数分解:

$2^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1\times {\mathrm{1999}}^1$

素因数の和:2292

約数の個数: 32

約数和(自身を含む): 745200000

約数和(自身を除く): 337144130

約数列:

[1, 2, 5, 10, 137, 149, 274, 298, 685, 745, 1370, 1490, 1999, 3998, 9995, 19990, 20413, 40826, 102065, 204130, 273863, 297851, 547726, 595702, 1369315, 1489255, 2738630, 2978510, 40805587, 81611174, 204027935, 408055870]

約数ペア:

[(1, 408055870), (2, 204027935), (5, 81611174), (10, 40805587), (137, 2978510), (149, 2738630), (274, 1489255), (298, 1369315), (685, 595702), (745, 547726), (1370, 297851), (1490, 273863), (1999, 204130), (3998, 102065), (9995, 40826), (19990, 20413)]