201780322828

素因数分解:

$2^2\times 7^2\times {\mathrm{1997}}^1\times {\mathrm{515519}}^1$

素因数の和:517534

約数の個数: 36

約数和(自身を含む): 410973575040

約数和(自身を除く): 209193252212

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 1997, 3994, 7988, 13979, 27958, 55916, 97853, 195706, 391412, 515519, 1031038, 2062076, 3608633, 7217266, 14434532, 25260431, 50520862, 101041724, 1029491443, 2058982886, 4117965772, 7206440101, 14412880202, 28825760404, 50445080707, 100890161414, 201780322828]

約数ペア:

[(1, 201780322828), (2, 100890161414), (4, 50445080707), (7, 28825760404), (14, 14412880202), (28, 7206440101), (49, 4117965772), (98, 2058982886), (196, 1029491443), (1997, 101041724), (3994, 50520862), (7988, 25260431), (13979, 14434532), (27958, 7217266), (55916, 3608633), (97853, 2062076), (195706, 1031038), (391412, 515519)]