20123191480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1301}}^1\times {\mathrm{1493}}^1$

素因数の和:2849

約数の個数: 128

約数和(自身を含む): 53220343680

約数和(自身を除く): 33097152200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 259, 280, 296, 370, 518, 740, 1036, 1295, 1301, 1480, 1493, 2072, 2590, 2602, 2986, 5180, 5204, 5972, 6505, 7465, 9107, 10360, 10408, 10451, 11944, 13010, 14930, 18214, 20902, 26020, 29860, 36428, 41804, 45535, 48137, 52040, 52255, 55241, 59720, 72856, 83608, 91070, 96274, 104510, 110482, 182140, 192548, 209020, 220964, 240685, 276205, 336959, 364280, 385096, 386687, 418040, 441928, 481370, 552410, 673918, 773374, 962740, 1104820, 1347836, 1546748, 1684795, 1925480, 1933435, 1942393, 2209640, 2695672, 3093496, 3369590, 3866870, 3884786, 6739180, 7733740, 7769572, 9711965, 13478360, 13596751, 15467480, 15539144, 19423930, 27193502, 38847860, 54387004, 67983755, 71868541, 77695720, 108774008, 135967510, 143737082, 271935020, 287474164, 359342705, 503079787, 543870040, 574948328, 718685410, 1006159574, 1437370820, 2012319148, 2515398935, 2874741640, 4024638296, 5030797870, 10061595740, 20123191480]

約数ペア:

[(1, 20123191480), (2, 10061595740), (4, 5030797870), (5, 4024638296), (7, 2874741640), (8, 2515398935), (10, 2012319148), (14, 1437370820), (20, 1006159574), (28, 718685410), (35, 574948328), (37, 543870040), (40, 503079787), (56, 359342705), (70, 287474164), (74, 271935020), (140, 143737082), (148, 135967510), (185, 108774008), (259, 77695720), (280, 71868541), (296, 67983755), (370, 54387004), (518, 38847860), (740, 27193502), (1036, 19423930), (1295, 15539144), (1301, 15467480), (1480, 13596751), (1493, 13478360), (2072, 9711965), (2590, 7769572), (2602, 7733740), (2986, 6739180), (5180, 3884786), (5204, 3866870), (5972, 3369590), (6505, 3093496), (7465, 2695672), (9107, 2209640), (10360, 1942393), (10408, 1933435), (10451, 1925480), (11944, 1684795), (13010, 1546748), (14930, 1347836), (18214, 1104820), (20902, 962740), (26020, 773374), (29860, 673918), (36428, 552410), (41804, 481370), (45535, 441928), (48137, 418040), (52040, 386687), (52255, 385096), (55241, 364280), (59720, 336959), (72856, 276205), (83608, 240685), (91070, 220964), (96274, 209020), (104510, 192548), (110482, 182140)]