7840840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{683}}^1$

素因数の和:742

約数の個数: 64

約数和(自身を含む): 20684160

約数和(自身を除く): 12843320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 56, 70, 82, 140, 164, 205, 280, 287, 328, 410, 574, 683, 820, 1148, 1366, 1435, 1640, 2296, 2732, 2870, 3415, 4781, 5464, 5740, 6830, 9562, 11480, 13660, 19124, 23905, 27320, 28003, 38248, 47810, 56006, 95620, 112012, 140015, 191240, 196021, 224024, 280030, 392042, 560060, 784084, 980105, 1120120, 1568168, 1960210, 3920420, 7840840]

約数ペア:

[(1, 7840840), (2, 3920420), (4, 1960210), (5, 1568168), (7, 1120120), (8, 980105), (10, 784084), (14, 560060), (20, 392042), (28, 280030), (35, 224024), (40, 196021), (41, 191240), (56, 140015), (70, 112012), (82, 95620), (140, 56006), (164, 47810), (205, 38248), (280, 28003), (287, 27320), (328, 23905), (410, 19124), (574, 13660), (683, 11480), (820, 9562), (1148, 6830), (1366, 5740), (1435, 5464), (1640, 4781), (2296, 3415), (2732, 2870)]