199044860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{197}}^1\times {\mathrm{1031}}^1$

素因数の和:1251

約数の個数: 72

約数和(自身を含む): 489180384

約数和(自身を除く): 290135524

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 197, 245, 394, 490, 788, 980, 985, 1031, 1379, 1970, 2062, 2758, 3940, 4124, 5155, 5516, 6895, 7217, 9653, 10310, 13790, 14434, 19306, 20620, 27580, 28868, 36085, 38612, 48265, 50519, 72170, 96530, 101038, 144340, 193060, 202076, 203107, 252595, 406214, 505190, 812428, 1010380, 1015535, 1421749, 2031070, 2843498, 4062140, 5686996, 7108745, 9952243, 14217490, 19904486, 28434980, 39808972, 49761215, 99522430, 199044860]

約数ペア:

[(1, 199044860), (2, 99522430), (4, 49761215), (5, 39808972), (7, 28434980), (10, 19904486), (14, 14217490), (20, 9952243), (28, 7108745), (35, 5686996), (49, 4062140), (70, 2843498), (98, 2031070), (140, 1421749), (196, 1015535), (197, 1010380), (245, 812428), (394, 505190), (490, 406214), (788, 252595), (980, 203107), (985, 202076), (1031, 193060), (1379, 144340), (1970, 101038), (2062, 96530), (2758, 72170), (3940, 50519), (4124, 48265), (5155, 38612), (5516, 36085), (6895, 28868), (7217, 27580), (9653, 20620), (10310, 19306), (13790, 14434)]