81751208

素因数分解:

$2^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{18959}}^1$

素因数の和:18990

約数の個数: 48

約数和(自身を含む): 194529600

約数和(自身を除く): 112778392

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 49, 56, 77, 88, 98, 154, 196, 308, 392, 539, 616, 1078, 2156, 4312, 18959, 37918, 75836, 132713, 151672, 208549, 265426, 417098, 530852, 834196, 928991, 1061704, 1459843, 1668392, 1857982, 2919686, 3715964, 5839372, 7431928, 10218901, 11678744, 20437802, 40875604, 81751208]

約数ペア:

[(1, 81751208), (2, 40875604), (4, 20437802), (7, 11678744), (8, 10218901), (11, 7431928), (14, 5839372), (22, 3715964), (28, 2919686), (44, 1857982), (49, 1668392), (56, 1459843), (77, 1061704), (88, 928991), (98, 834196), (154, 530852), (196, 417098), (308, 265426), (392, 208549), (539, 151672), (616, 132713), (1078, 75836), (2156, 37918), (4312, 18959)]