81257176

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:249

約数の個数: 128

約数和(自身を含む): 208857600

約数和(自身を除く): 127600424

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 22, 26, 28, 44, 52, 56, 73, 77, 88, 91, 104, 139, 143, 146, 154, 182, 278, 286, 292, 308, 364, 511, 556, 572, 584, 616, 728, 803, 949, 973, 1001, 1022, 1112, 1144, 1529, 1606, 1807, 1898, 1946, 2002, 2044, 3058, 3212, 3614, 3796, 3892, 4004, 4088, 5621, 6116, 6424, 6643, 7228, 7592, 7784, 8008, 10147, 10439, 10703, 11242, 12232, 12649, 13286, 14456, 19877, 20294, 20878, 21406, 22484, 25298, 26572, 39754, 40588, 41756, 42812, 44968, 50596, 53144, 71029, 73073, 79508, 81176, 83512, 85624, 101192, 111617, 131911, 139139, 142058, 146146, 159016, 223234, 263822, 278278, 284116, 292292, 446468, 527644, 556556, 568232, 584584, 781319, 892936, 923377, 1055288, 1113112, 1451021, 1562638, 1846754, 2902042, 3125276, 3693508, 5804084, 6250552, 7387016, 10157147, 11608168, 20314294, 40628588, 81257176]

約数ペア:

[(1, 81257176), (2, 40628588), (4, 20314294), (7, 11608168), (8, 10157147), (11, 7387016), (13, 6250552), (14, 5804084), (22, 3693508), (26, 3125276), (28, 2902042), (44, 1846754), (52, 1562638), (56, 1451021), (73, 1113112), (77, 1055288), (88, 923377), (91, 892936), (104, 781319), (139, 584584), (143, 568232), (146, 556556), (154, 527644), (182, 446468), (278, 292292), (286, 284116), (292, 278278), (308, 263822), (364, 223234), (511, 159016), (556, 146146), (572, 142058), (584, 139139), (616, 131911), (728, 111617), (803, 101192), (949, 85624), (973, 83512), (1001, 81176), (1022, 79508), (1112, 73073), (1144, 71029), (1529, 53144), (1606, 50596), (1807, 44968), (1898, 42812), (1946, 41756), (2002, 40588), (2044, 39754), (3058, 26572), (3212, 25298), (3614, 22484), (3796, 21406), (3892, 20878), (4004, 20294), (4088, 19877), (5621, 14456), (6116, 13286), (6424, 12649), (6643, 12232), (7228, 11242), (7592, 10703), (7784, 10439), (8008, 10147)]