15687280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:386

約数の個数: 80

約数和(自身を含む): 42229440

約数和(自身を除く): 26542160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 109, 112, 140, 218, 257, 280, 436, 514, 545, 560, 763, 872, 1028, 1090, 1285, 1526, 1744, 1799, 2056, 2180, 2570, 3052, 3598, 3815, 4112, 4360, 5140, 6104, 7196, 7630, 8720, 8995, 10280, 12208, 14392, 15260, 17990, 20560, 28013, 28784, 30520, 35980, 56026, 61040, 71960, 112052, 140065, 143920, 196091, 224104, 280130, 392182, 448208, 560260, 784364, 980455, 1120520, 1568728, 1960910, 2241040, 3137456, 3921820, 7843640, 15687280]

約数ペア:

[(1, 15687280), (2, 7843640), (4, 3921820), (5, 3137456), (7, 2241040), (8, 1960910), (10, 1568728), (14, 1120520), (16, 980455), (20, 784364), (28, 560260), (35, 448208), (40, 392182), (56, 280130), (70, 224104), (80, 196091), (109, 143920), (112, 140065), (140, 112052), (218, 71960), (257, 61040), (280, 56026), (436, 35980), (514, 30520), (545, 28784), (560, 28013), (763, 20560), (872, 17990), (1028, 15260), (1090, 14392), (1285, 12208), (1526, 10280), (1744, 8995), (1799, 8720), (2056, 7630), (2180, 7196), (2570, 6104), (3052, 5140), (3598, 4360), (3815, 4112)]