19680080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{311}}^1$

素因数の和:444

約数の個数: 80

約数和(自身を含む): 52925184

約数和(自身を除く): 33245104

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 113, 140, 226, 280, 311, 452, 560, 565, 622, 791, 904, 1130, 1244, 1555, 1582, 1808, 2177, 2260, 2488, 3110, 3164, 3955, 4354, 4520, 4976, 6220, 6328, 7910, 8708, 9040, 10885, 12440, 12656, 15820, 17416, 21770, 24880, 31640, 34832, 35143, 43540, 63280, 70286, 87080, 140572, 174160, 175715, 246001, 281144, 351430, 492002, 562288, 702860, 984004, 1230005, 1405720, 1968008, 2460010, 2811440, 3936016, 4920020, 9840040, 19680080]

約数ペア:

[(1, 19680080), (2, 9840040), (4, 4920020), (5, 3936016), (7, 2811440), (8, 2460010), (10, 1968008), (14, 1405720), (16, 1230005), (20, 984004), (28, 702860), (35, 562288), (40, 492002), (56, 351430), (70, 281144), (80, 246001), (112, 175715), (113, 174160), (140, 140572), (226, 87080), (280, 70286), (311, 63280), (452, 43540), (560, 35143), (565, 34832), (622, 31640), (791, 24880), (904, 21770), (1130, 17416), (1244, 15820), (1555, 12656), (1582, 12440), (1808, 10885), (2177, 9040), (2260, 8708), (2488, 7910), (3110, 6328), (3164, 6220), (3955, 4976), (4354, 4520)]