257359840

素因数分解:

$2^5\times 5^1\times {\mathrm{223}}^1\times {\mathrm{7213}}^1$

素因数の和:7451

約数の個数: 48

約数和(自身を含む): 610823808

約数和(自身を除く): 353463968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 223, 446, 892, 1115, 1784, 2230, 3568, 4460, 7136, 7213, 8920, 14426, 17840, 28852, 35680, 36065, 57704, 72130, 115408, 144260, 230816, 288520, 577040, 1154080, 1608499, 3216998, 6433996, 8042495, 12867992, 16084990, 25735984, 32169980, 51471968, 64339960, 128679920, 257359840]

約数ペア:

[(1, 257359840), (2, 128679920), (4, 64339960), (5, 51471968), (8, 32169980), (10, 25735984), (16, 16084990), (20, 12867992), (32, 8042495), (40, 6433996), (80, 3216998), (160, 1608499), (223, 1154080), (446, 577040), (892, 288520), (1115, 230816), (1784, 144260), (2230, 115408), (3568, 72130), (4460, 57704), (7136, 36065), (7213, 35680), (8920, 28852), (14426, 17840)]