81291196

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{263}}^1$

素因数の和:383

約数の個数: 72

約数和(自身を含む): 176964480

約数和(自身を除く): 95673284

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 76, 83, 98, 133, 166, 196, 263, 266, 332, 526, 532, 581, 931, 1052, 1162, 1577, 1841, 1862, 2324, 3154, 3682, 3724, 4067, 4997, 6308, 7364, 8134, 9994, 11039, 12887, 16268, 19988, 21829, 22078, 25774, 34979, 43658, 44156, 51548, 69958, 77273, 87316, 139916, 152803, 154546, 244853, 305606, 309092, 414751, 489706, 611212, 829502, 979412, 1069621, 1659004, 2139242, 2903257, 4278484, 5806514, 11613028, 20322799, 40645598, 81291196]

約数ペア:

[(1, 81291196), (2, 40645598), (4, 20322799), (7, 11613028), (14, 5806514), (19, 4278484), (28, 2903257), (38, 2139242), (49, 1659004), (76, 1069621), (83, 979412), (98, 829502), (133, 611212), (166, 489706), (196, 414751), (263, 309092), (266, 305606), (332, 244853), (526, 154546), (532, 152803), (581, 139916), (931, 87316), (1052, 77273), (1162, 69958), (1577, 51548), (1841, 44156), (1862, 43658), (2324, 34979), (3154, 25774), (3682, 22078), (3724, 21829), (4067, 19988), (4997, 16268), (6308, 12887), (7364, 11039), (8134, 9994)]