12810040

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:232

約数の個数: 64

約数和(自身を含む): 30209760

約数和(自身を除く): 17399720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 73, 82, 107, 146, 164, 205, 214, 292, 328, 365, 410, 428, 535, 584, 730, 820, 856, 1070, 1460, 1640, 2140, 2920, 2993, 4280, 4387, 5986, 7811, 8774, 11972, 14965, 15622, 17548, 21935, 23944, 29930, 31244, 35096, 39055, 43870, 59860, 62488, 78110, 87740, 119720, 156220, 175480, 312440, 320251, 640502, 1281004, 1601255, 2562008, 3202510, 6405020, 12810040]

約数ペア:

[(1, 12810040), (2, 6405020), (4, 3202510), (5, 2562008), (8, 1601255), (10, 1281004), (20, 640502), (40, 320251), (41, 312440), (73, 175480), (82, 156220), (107, 119720), (146, 87740), (164, 78110), (205, 62488), (214, 59860), (292, 43870), (328, 39055), (365, 35096), (410, 31244), (428, 29930), (535, 23944), (584, 21935), (730, 17548), (820, 15622), (856, 14965), (1070, 11972), (1460, 8774), (1640, 7811), (2140, 5986), (2920, 4387), (2993, 4280)]