64008520

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{709}}^1$

素因数の和:818

約数の個数: 64

約数和(自身を含む): 150548400

約数和(自身を除く): 86539880

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 61, 74, 122, 148, 185, 244, 296, 305, 370, 488, 610, 709, 740, 1220, 1418, 1480, 2257, 2440, 2836, 3545, 4514, 5672, 7090, 9028, 11285, 14180, 18056, 22570, 26233, 28360, 43249, 45140, 52466, 86498, 90280, 104932, 131165, 172996, 209864, 216245, 262330, 345992, 432490, 524660, 864980, 1049320, 1600213, 1729960, 3200426, 6400852, 8001065, 12801704, 16002130, 32004260, 64008520]

約数ペア:

[(1, 64008520), (2, 32004260), (4, 16002130), (5, 12801704), (8, 8001065), (10, 6400852), (20, 3200426), (37, 1729960), (40, 1600213), (61, 1049320), (74, 864980), (122, 524660), (148, 432490), (185, 345992), (244, 262330), (296, 216245), (305, 209864), (370, 172996), (488, 131165), (610, 104932), (709, 90280), (740, 86498), (1220, 52466), (1418, 45140), (1480, 43249), (2257, 28360), (2440, 26233), (2836, 22570), (3545, 18056), (4514, 14180), (5672, 11285), (7090, 9028)]