7843640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:384

約数の個数: 64

約数和(自身を含む): 20433600

約数和(自身を除く): 12589960

約数列:

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

約数ペア:

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