80081980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{2657}}^1$

素因数の和:2814

約数の個数: 48

約数和(自身を含む): 184869216

約数和(自身を除く): 104787236

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 137, 220, 274, 548, 685, 1370, 1507, 2657, 2740, 3014, 5314, 6028, 7535, 10628, 13285, 15070, 26570, 29227, 30140, 53140, 58454, 116908, 146135, 292270, 364009, 584540, 728018, 1456036, 1820045, 3640090, 4004099, 7280180, 8008198, 16016396, 20020495, 40040990, 80081980]

約数ペア:

[(1, 80081980), (2, 40040990), (4, 20020495), (5, 16016396), (10, 8008198), (11, 7280180), (20, 4004099), (22, 3640090), (44, 1820045), (55, 1456036), (110, 728018), (137, 584540), (220, 364009), (274, 292270), (548, 146135), (685, 116908), (1370, 58454), (1507, 53140), (2657, 30140), (2740, 29227), (3014, 26570), (5314, 15070), (6028, 13285), (7535, 10628)]