221243120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{461}}^1\times {\mathrm{857}}^1$

素因数の和:1338

約数の個数: 80

約数和(自身を含む): 589837248

約数和(自身を除く): 368594128

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 461, 560, 857, 922, 1714, 1844, 2305, 3227, 3428, 3688, 4285, 4610, 5999, 6454, 6856, 7376, 8570, 9220, 11998, 12908, 13712, 16135, 17140, 18440, 23996, 25816, 29995, 32270, 34280, 36880, 47992, 51632, 59990, 64540, 68560, 95984, 119980, 129080, 239960, 258160, 395077, 479920, 790154, 1580308, 1975385, 2765539, 3160616, 3950770, 5531078, 6321232, 7901540, 11062156, 13827695, 15803080, 22124312, 27655390, 31606160, 44248624, 55310780, 110621560, 221243120]

約数ペア:

[(1, 221243120), (2, 110621560), (4, 55310780), (5, 44248624), (7, 31606160), (8, 27655390), (10, 22124312), (14, 15803080), (16, 13827695), (20, 11062156), (28, 7901540), (35, 6321232), (40, 5531078), (56, 3950770), (70, 3160616), (80, 2765539), (112, 1975385), (140, 1580308), (280, 790154), (461, 479920), (560, 395077), (857, 258160), (922, 239960), (1714, 129080), (1844, 119980), (2305, 95984), (3227, 68560), (3428, 64540), (3688, 59990), (4285, 51632), (4610, 47992), (5999, 36880), (6454, 34280), (6856, 32270), (7376, 29995), (8570, 25816), (9220, 23996), (11998, 18440), (12908, 17140), (13712, 16135)]