668560

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:211

約数の個数: 40

約数和(自身を含む): 1591416

約数和(自身を除く): 922856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 137, 244, 274, 305, 488, 548, 610, 685, 976, 1096, 1220, 1370, 2192, 2440, 2740, 4880, 5480, 8357, 10960, 16714, 33428, 41785, 66856, 83570, 133712, 167140, 334280, 668560]

約数ペア:

[(1, 668560), (2, 334280), (4, 167140), (5, 133712), (8, 83570), (10, 66856), (16, 41785), (20, 33428), (40, 16714), (61, 10960), (80, 8357), (122, 5480), (137, 4880), (244, 2740), (274, 2440), (305, 2192), (488, 1370), (548, 1220), (610, 1096), (685, 976)]