77664680

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{379}}^1$

素因数の和:546

約数の個数: 64

約数和(自身を含む): 180576000

約数和(自身を除く): 102911320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 109, 188, 218, 235, 376, 379, 436, 470, 545, 758, 872, 940, 1090, 1516, 1880, 1895, 2180, 3032, 3790, 4360, 5123, 7580, 10246, 15160, 17813, 20492, 25615, 35626, 40984, 41311, 51230, 71252, 82622, 89065, 102460, 142504, 165244, 178130, 204920, 206555, 330488, 356260, 413110, 712520, 826220, 1652440, 1941617, 3883234, 7766468, 9708085, 15532936, 19416170, 38832340, 77664680]

約数ペア:

[(1, 77664680), (2, 38832340), (4, 19416170), (5, 15532936), (8, 9708085), (10, 7766468), (20, 3883234), (40, 1941617), (47, 1652440), (94, 826220), (109, 712520), (188, 413110), (218, 356260), (235, 330488), (376, 206555), (379, 204920), (436, 178130), (470, 165244), (545, 142504), (758, 102460), (872, 89065), (940, 82622), (1090, 71252), (1516, 51230), (1880, 41311), (1895, 40984), (2180, 35626), (3032, 25615), (3790, 20492), (4360, 17813), (5123, 15160), (7580, 10246)]