64761280

素因数分解:

$2^6\times 5^1\times {\mathrm{439}}^1\times {\mathrm{461}}^1$

素因数の和:917

約数の個数: 56

約数和(自身を含む): 154899360

約数和(自身を除く): 90138080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 439, 461, 878, 922, 1756, 1844, 2195, 2305, 3512, 3688, 4390, 4610, 7024, 7376, 8780, 9220, 14048, 14752, 17560, 18440, 28096, 29504, 35120, 36880, 70240, 73760, 140480, 147520, 202379, 404758, 809516, 1011895, 1619032, 2023790, 3238064, 4047580, 6476128, 8095160, 12952256, 16190320, 32380640, 64761280]

約数ペア:

[(1, 64761280), (2, 32380640), (4, 16190320), (5, 12952256), (8, 8095160), (10, 6476128), (16, 4047580), (20, 3238064), (32, 2023790), (40, 1619032), (64, 1011895), (80, 809516), (160, 404758), (320, 202379), (439, 147520), (461, 140480), (878, 73760), (922, 70240), (1756, 36880), (1844, 35120), (2195, 29504), (2305, 28096), (3512, 18440), (3688, 17560), (4390, 14752), (4610, 14048), (7024, 9220), (7376, 8780)]