81591776

素因数分解:

$2^5\times 7^1\times {\mathrm{19}}^2\times {\mathrm{1009}}^1$

素因数の和:1064

約数の個数: 72

約数和(自身を含む): 193944240

約数和(自身を除く): 112352464

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 76, 112, 133, 152, 224, 266, 304, 361, 532, 608, 722, 1009, 1064, 1444, 2018, 2128, 2527, 2888, 4036, 4256, 5054, 5776, 7063, 8072, 10108, 11552, 14126, 16144, 19171, 20216, 28252, 32288, 38342, 40432, 56504, 76684, 80864, 113008, 134197, 153368, 226016, 268394, 306736, 364249, 536788, 613472, 728498, 1073576, 1456996, 2147152, 2549743, 2913992, 4294304, 5099486, 5827984, 10198972, 11655968, 20397944, 40795888, 81591776]

約数ペア:

[(1, 81591776), (2, 40795888), (4, 20397944), (7, 11655968), (8, 10198972), (14, 5827984), (16, 5099486), (19, 4294304), (28, 2913992), (32, 2549743), (38, 2147152), (56, 1456996), (76, 1073576), (112, 728498), (133, 613472), (152, 536788), (224, 364249), (266, 306736), (304, 268394), (361, 226016), (532, 153368), (608, 134197), (722, 113008), (1009, 80864), (1064, 76684), (1444, 56504), (2018, 40432), (2128, 38342), (2527, 32288), (2888, 28252), (4036, 20216), (4256, 19171), (5054, 16144), (5776, 14126), (7063, 11552), (8072, 10108)]