81816400

素因数分解:

$2^4\times 5^2\times {\mathrm{137}}^1\times {\mathrm{1493}}^1$

素因数の和:1648

約数の個数: 60

約数和(自身を含む): 198131292

約数和(自身を除く): 116314892

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 137, 200, 274, 400, 548, 685, 1096, 1370, 1493, 2192, 2740, 2986, 3425, 5480, 5972, 6850, 7465, 10960, 11944, 13700, 14930, 23888, 27400, 29860, 37325, 54800, 59720, 74650, 119440, 149300, 204541, 298600, 409082, 597200, 818164, 1022705, 1636328, 2045410, 3272656, 4090820, 5113525, 8181640, 10227050, 16363280, 20454100, 40908200, 81816400]

約数ペア:

[(1, 81816400), (2, 40908200), (4, 20454100), (5, 16363280), (8, 10227050), (10, 8181640), (16, 5113525), (20, 4090820), (25, 3272656), (40, 2045410), (50, 1636328), (80, 1022705), (100, 818164), (137, 597200), (200, 409082), (274, 298600), (400, 204541), (548, 149300), (685, 119440), (1096, 74650), (1370, 59720), (1493, 54800), (2192, 37325), (2740, 29860), (2986, 27400), (3425, 23888), (5480, 14930), (5972, 13700), (6850, 11944), (7465, 10960)]