8123720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{499}}^1$

素因数の和:558

約数の個数: 64

約数和(自身を含む): 20520000

約数和(自身を除く): 12396280

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 37, 40, 44, 55, 74, 88, 110, 148, 185, 220, 296, 370, 407, 440, 499, 740, 814, 998, 1480, 1628, 1996, 2035, 2495, 3256, 3992, 4070, 4990, 5489, 8140, 9980, 10978, 16280, 18463, 19960, 21956, 27445, 36926, 43912, 54890, 73852, 92315, 109780, 147704, 184630, 203093, 219560, 369260, 406186, 738520, 812372, 1015465, 1624744, 2030930, 4061860, 8123720]

約数ペア:

[(1, 8123720), (2, 4061860), (4, 2030930), (5, 1624744), (8, 1015465), (10, 812372), (11, 738520), (20, 406186), (22, 369260), (37, 219560), (40, 203093), (44, 184630), (55, 147704), (74, 109780), (88, 92315), (110, 73852), (148, 54890), (185, 43912), (220, 36926), (296, 27445), (370, 21956), (407, 19960), (440, 18463), (499, 16280), (740, 10978), (814, 9980), (998, 8140), (1480, 5489), (1628, 4990), (1996, 4070), (2035, 3992), (2495, 3256)]