64318720

素因数分解:

$2^8\times 5^1\times {\mathrm{109}}^1\times {\mathrm{461}}^1$

素因数の和:591

約数の個数: 72

約数和(自身を含む): 155814120

約数和(自身を除く): 91495400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 128, 160, 218, 256, 320, 436, 461, 545, 640, 872, 922, 1090, 1280, 1744, 1844, 2180, 2305, 3488, 3688, 4360, 4610, 6976, 7376, 8720, 9220, 13952, 14752, 17440, 18440, 27904, 29504, 34880, 36880, 50249, 59008, 69760, 73760, 100498, 118016, 139520, 147520, 200996, 251245, 295040, 401992, 502490, 590080, 803984, 1004980, 1607968, 2009960, 3215936, 4019920, 6431872, 8039840, 12863744, 16079680, 32159360, 64318720]

約数ペア:

[(1, 64318720), (2, 32159360), (4, 16079680), (5, 12863744), (8, 8039840), (10, 6431872), (16, 4019920), (20, 3215936), (32, 2009960), (40, 1607968), (64, 1004980), (80, 803984), (109, 590080), (128, 502490), (160, 401992), (218, 295040), (256, 251245), (320, 200996), (436, 147520), (461, 139520), (545, 118016), (640, 100498), (872, 73760), (922, 69760), (1090, 59008), (1280, 50249), (1744, 36880), (1844, 34880), (2180, 29504), (2305, 27904), (3488, 18440), (3688, 17440), (4360, 14752), (4610, 13952), (6976, 9220), (7376, 8720)]