820183280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{857}}^1\times {\mathrm{1709}}^1$

素因数の和:2586

約数の個数: 80

約数和(自身を含む): 2183163840

約数和(自身を除く): 1362980560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 857, 1709, 1714, 3418, 3428, 4285, 5999, 6836, 6856, 8545, 8570, 11963, 11998, 13672, 13712, 17090, 17140, 23926, 23996, 27344, 29995, 34180, 34280, 47852, 47992, 59815, 59990, 68360, 68560, 95704, 95984, 119630, 119980, 136720, 191408, 239260, 239960, 478520, 479920, 957040, 1464613, 2929226, 5858452, 7323065, 10252291, 11716904, 14646130, 20504582, 23433808, 29292260, 41009164, 51261455, 58584520, 82018328, 102522910, 117169040, 164036656, 205045820, 410091640, 820183280]

約数ペア:

[(1, 820183280), (2, 410091640), (4, 205045820), (5, 164036656), (7, 117169040), (8, 102522910), (10, 82018328), (14, 58584520), (16, 51261455), (20, 41009164), (28, 29292260), (35, 23433808), (40, 20504582), (56, 14646130), (70, 11716904), (80, 10252291), (112, 7323065), (140, 5858452), (280, 2929226), (560, 1464613), (857, 957040), (1709, 479920), (1714, 478520), (3418, 239960), (3428, 239260), (4285, 191408), (5999, 136720), (6836, 119980), (6856, 119630), (8545, 95984), (8570, 95704), (11963, 68560), (11998, 68360), (13672, 59990), (13712, 59815), (17090, 47992), (17140, 47852), (23926, 34280), (23996, 34180), (27344, 29995)]