81489170

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{431}}^1$

素因数の和:555

約数の個数: 64

約数和(自身を含む): 174928896

約数和(自身を除く): 93439726

約数列:

[1, 2, 5, 7, 10, 14, 35, 37, 70, 73, 74, 146, 185, 259, 365, 370, 431, 511, 518, 730, 862, 1022, 1295, 2155, 2555, 2590, 2701, 3017, 4310, 5110, 5402, 6034, 13505, 15085, 15947, 18907, 27010, 30170, 31463, 31894, 37814, 62926, 79735, 94535, 111629, 157315, 159470, 189070, 220241, 223258, 314630, 440482, 558145, 1101205, 1116290, 1164131, 2202410, 2328262, 5820655, 8148917, 11641310, 16297834, 40744585, 81489170]

約数ペア:

[(1, 81489170), (2, 40744585), (5, 16297834), (7, 11641310), (10, 8148917), (14, 5820655), (35, 2328262), (37, 2202410), (70, 1164131), (73, 1116290), (74, 1101205), (146, 558145), (185, 440482), (259, 314630), (365, 223258), (370, 220241), (431, 189070), (511, 159470), (518, 157315), (730, 111629), (862, 94535), (1022, 79735), (1295, 62926), (2155, 37814), (2555, 31894), (2590, 31463), (2701, 30170), (3017, 27010), (4310, 18907), (5110, 15947), (5402, 15085), (6034, 13505)]