217598320

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{13807}}^1$

素因数の和:14017

約数の個数: 40

約数和(自身を含む): 508521024

約数和(自身を除く): 290922704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1576, 1970, 3152, 3940, 7880, 13807, 15760, 27614, 55228, 69035, 110456, 138070, 220912, 276140, 552280, 1104560, 2719979, 5439958, 10879916, 13599895, 21759832, 27199790, 43519664, 54399580, 108799160, 217598320]

約数ペア:

[(1, 217598320), (2, 108799160), (4, 54399580), (5, 43519664), (8, 27199790), (10, 21759832), (16, 13599895), (20, 10879916), (40, 5439958), (80, 2719979), (197, 1104560), (394, 552280), (788, 276140), (985, 220912), (1576, 138070), (1970, 110456), (3152, 69035), (3940, 55228), (7880, 27614), (13807, 15760)]