12879440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{211}}^1$

素因数の和:340

約数の個数: 80

約数和(自身を含む): 34700160

約数和(自身を除く): 21820720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 109, 112, 140, 211, 218, 280, 422, 436, 545, 560, 763, 844, 872, 1055, 1090, 1477, 1526, 1688, 1744, 2110, 2180, 2954, 3052, 3376, 3815, 4220, 4360, 5908, 6104, 7385, 7630, 8440, 8720, 11816, 12208, 14770, 15260, 16880, 22999, 23632, 29540, 30520, 45998, 59080, 61040, 91996, 114995, 118160, 160993, 183992, 229990, 321986, 367984, 459980, 643972, 804965, 919960, 1287944, 1609930, 1839920, 2575888, 3219860, 6439720, 12879440]

約数ペア:

[(1, 12879440), (2, 6439720), (4, 3219860), (5, 2575888), (7, 1839920), (8, 1609930), (10, 1287944), (14, 919960), (16, 804965), (20, 643972), (28, 459980), (35, 367984), (40, 321986), (56, 229990), (70, 183992), (80, 160993), (109, 118160), (112, 114995), (140, 91996), (211, 61040), (218, 59080), (280, 45998), (422, 30520), (436, 29540), (545, 23632), (560, 22999), (763, 16880), (844, 15260), (872, 14770), (1055, 12208), (1090, 11816), (1477, 8720), (1526, 8440), (1688, 7630), (1744, 7385), (2110, 6104), (2180, 5908), (2954, 4360), (3052, 4220), (3376, 3815)]