2519440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1$

素因数の和:440

約数の個数: 80

約数和(自身を含む): 7320960

約数和(自身を除く): 4801520

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 409, 440, 560, 616, 770, 818, 880, 1232, 1540, 1636, 2045, 2863, 3080, 3272, 4090, 4499, 5726, 6160, 6544, 8180, 8998, 11452, 14315, 16360, 17996, 22495, 22904, 28630, 31493, 32720, 35992, 44990, 45808, 57260, 62986, 71984, 89980, 114520, 125972, 157465, 179960, 229040, 251944, 314930, 359920, 503888, 629860, 1259720, 2519440]

約数ペア:

[(1, 2519440), (2, 1259720), (4, 629860), (5, 503888), (7, 359920), (8, 314930), (10, 251944), (11, 229040), (14, 179960), (16, 157465), (20, 125972), (22, 114520), (28, 89980), (35, 71984), (40, 62986), (44, 57260), (55, 45808), (56, 44990), (70, 35992), (77, 32720), (80, 31493), (88, 28630), (110, 22904), (112, 22495), (140, 17996), (154, 16360), (176, 14315), (220, 11452), (280, 8998), (308, 8180), (385, 6544), (409, 6160), (440, 5726), (560, 4499), (616, 4090), (770, 3272), (818, 3080), (880, 2863), (1232, 2045), (1540, 1636)]