78720320

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{311}}^1$

素因数の和:448

約数の個数: 112

約数和(自身を含む): 216822528

約数和(自身を除く): 138102208

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 113, 140, 160, 224, 226, 280, 311, 320, 448, 452, 560, 565, 622, 791, 904, 1120, 1130, 1244, 1555, 1582, 1808, 2177, 2240, 2260, 2488, 3110, 3164, 3616, 3955, 4354, 4520, 4976, 6220, 6328, 7232, 7910, 8708, 9040, 9952, 10885, 12440, 12656, 15820, 17416, 18080, 19904, 21770, 24880, 25312, 31640, 34832, 35143, 36160, 43540, 49760, 50624, 63280, 69664, 70286, 87080, 99520, 126560, 139328, 140572, 174160, 175715, 246001, 253120, 281144, 348320, 351430, 492002, 562288, 696640, 702860, 984004, 1124576, 1230005, 1405720, 1968008, 2249152, 2460010, 2811440, 3936016, 4920020, 5622880, 7872032, 9840040, 11245760, 15744064, 19680080, 39360160, 78720320]

約数ペア:

[(1, 78720320), (2, 39360160), (4, 19680080), (5, 15744064), (7, 11245760), (8, 9840040), (10, 7872032), (14, 5622880), (16, 4920020), (20, 3936016), (28, 2811440), (32, 2460010), (35, 2249152), (40, 1968008), (56, 1405720), (64, 1230005), (70, 1124576), (80, 984004), (112, 702860), (113, 696640), (140, 562288), (160, 492002), (224, 351430), (226, 348320), (280, 281144), (311, 253120), (320, 246001), (448, 175715), (452, 174160), (560, 140572), (565, 139328), (622, 126560), (791, 99520), (904, 87080), (1120, 70286), (1130, 69664), (1244, 63280), (1555, 50624), (1582, 49760), (1808, 43540), (2177, 36160), (2240, 35143), (2260, 34832), (2488, 31640), (3110, 25312), (3164, 24880), (3616, 21770), (3955, 19904), (4354, 18080), (4520, 17416), (4976, 15820), (6220, 12656), (6328, 12440), (7232, 10885), (7910, 9952), (8708, 9040)]