19806701680

素因数分解:

$2^4\times 5^1\times {\mathrm{83}}^3\times {\mathrm{433}}^1$

素因数の和:695

約数の個数: 80

約数和(自身を含む): 46719822240

約数和(自身を除く): 26913120560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 166, 332, 415, 433, 664, 830, 866, 1328, 1660, 1732, 2165, 3320, 3464, 4330, 6640, 6889, 6928, 8660, 13778, 17320, 27556, 34445, 34640, 35939, 55112, 68890, 71878, 110224, 137780, 143756, 179695, 275560, 287512, 359390, 551120, 571787, 575024, 718780, 1143574, 1437560, 2287148, 2858935, 2875120, 2982937, 4574296, 5717870, 5965874, 9148592, 11435740, 11931748, 14914685, 22871480, 23863496, 29829370, 45742960, 47726992, 59658740, 119317480, 238634960, 247583771, 495167542, 990335084, 1237918855, 1980670168, 2475837710, 3961340336, 4951675420, 9903350840, 19806701680]

約数ペア:

[(1, 19806701680), (2, 9903350840), (4, 4951675420), (5, 3961340336), (8, 2475837710), (10, 1980670168), (16, 1237918855), (20, 990335084), (40, 495167542), (80, 247583771), (83, 238634960), (166, 119317480), (332, 59658740), (415, 47726992), (433, 45742960), (664, 29829370), (830, 23863496), (866, 22871480), (1328, 14914685), (1660, 11931748), (1732, 11435740), (2165, 9148592), (3320, 5965874), (3464, 5717870), (4330, 4574296), (6640, 2982937), (6889, 2875120), (6928, 2858935), (8660, 2287148), (13778, 1437560), (17320, 1143574), (27556, 718780), (34445, 575024), (34640, 571787), (35939, 551120), (55112, 359390), (68890, 287512), (71878, 275560), (110224, 179695), (137780, 143756)]