81789440

素因数分解:

$2^9\times 5^1\times {\mathrm{43}}^1\times {\mathrm{743}}^1$

素因数の和:809

約数の個数: 80

約数和(自身を含む): 200933568

約数和(自身を除く): 119144128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 160, 172, 215, 256, 320, 344, 430, 512, 640, 688, 743, 860, 1280, 1376, 1486, 1720, 2560, 2752, 2972, 3440, 3715, 5504, 5944, 6880, 7430, 11008, 11888, 13760, 14860, 22016, 23776, 27520, 29720, 31949, 47552, 55040, 59440, 63898, 95104, 110080, 118880, 127796, 159745, 190208, 237760, 255592, 319490, 380416, 475520, 511184, 638980, 951040, 1022368, 1277960, 1902080, 2044736, 2555920, 4089472, 5111840, 8178944, 10223680, 16357888, 20447360, 40894720, 81789440]

約数ペア:

[(1, 81789440), (2, 40894720), (4, 20447360), (5, 16357888), (8, 10223680), (10, 8178944), (16, 5111840), (20, 4089472), (32, 2555920), (40, 2044736), (43, 1902080), (64, 1277960), (80, 1022368), (86, 951040), (128, 638980), (160, 511184), (172, 475520), (215, 380416), (256, 319490), (320, 255592), (344, 237760), (430, 190208), (512, 159745), (640, 127796), (688, 118880), (743, 110080), (860, 95104), (1280, 63898), (1376, 59440), (1486, 55040), (1720, 47552), (2560, 31949), (2752, 29720), (2972, 27520), (3440, 23776), (3715, 22016), (5504, 14860), (5944, 13760), (6880, 11888), (7430, 11008)]