20543680

素因数分解:

$2^6\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1493}}^1$

素因数の和:1553

約数の個数: 56

約数和(自身を含む): 50090832

約数和(自身を除く): 29547152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 160, 172, 215, 320, 344, 430, 688, 860, 1376, 1493, 1720, 2752, 2986, 3440, 5972, 6880, 7465, 11944, 13760, 14930, 23888, 29860, 47776, 59720, 64199, 95552, 119440, 128398, 238880, 256796, 320995, 477760, 513592, 641990, 1027184, 1283980, 2054368, 2567960, 4108736, 5135920, 10271840, 20543680]

約数ペア:

[(1, 20543680), (2, 10271840), (4, 5135920), (5, 4108736), (8, 2567960), (10, 2054368), (16, 1283980), (20, 1027184), (32, 641990), (40, 513592), (43, 477760), (64, 320995), (80, 256796), (86, 238880), (160, 128398), (172, 119440), (215, 95552), (320, 64199), (344, 59720), (430, 47776), (688, 29860), (860, 23888), (1376, 14930), (1493, 13760), (1720, 11944), (2752, 7465), (2986, 6880), (3440, 5972)]