687280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{71}}^1$

素因数の和:106

約数の個数: 60

約数和(自身を含む): 1781136

約数和(自身を除く): 1093856

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 71, 80, 88, 110, 121, 142, 176, 220, 242, 284, 355, 440, 484, 568, 605, 710, 781, 880, 968, 1136, 1210, 1420, 1562, 1936, 2420, 2840, 3124, 3905, 4840, 5680, 6248, 7810, 8591, 9680, 12496, 15620, 17182, 31240, 34364, 42955, 62480, 68728, 85910, 137456, 171820, 343640, 687280]

約数ペア:

[(1, 687280), (2, 343640), (4, 171820), (5, 137456), (8, 85910), (10, 68728), (11, 62480), (16, 42955), (20, 34364), (22, 31240), (40, 17182), (44, 15620), (55, 12496), (71, 9680), (80, 8591), (88, 7810), (110, 6248), (121, 5680), (142, 4840), (176, 3905), (220, 3124), (242, 2840), (284, 2420), (355, 1936), (440, 1562), (484, 1420), (568, 1210), (605, 1136), (710, 968), (781, 880)]