8181640

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1493}}^1$

素因数の和:1641

約数の個数: 32

約数和(自身を含む): 18555480

約数和(自身を除く): 10373840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 1493, 2740, 2986, 5480, 5972, 7465, 11944, 14930, 29860, 59720, 204541, 409082, 818164, 1022705, 1636328, 2045410, 4090820, 8181640]

約数ペア:

[(1, 8181640), (2, 4090820), (4, 2045410), (5, 1636328), (8, 1022705), (10, 818164), (20, 409082), (40, 204541), (137, 59720), (274, 29860), (548, 14930), (685, 11944), (1096, 7465), (1370, 5972), (1493, 5480), (2740, 2986)]