28320292

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{643}}^1$

素因数の和:689

約数の個数: 72

約数和(自身を含む): 67151168

約数和(自身を除く): 38830876

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 121, 143, 154, 182, 242, 286, 308, 364, 484, 572, 643, 847, 1001, 1286, 1573, 1694, 2002, 2572, 3146, 3388, 4004, 4501, 6292, 7073, 8359, 9002, 11011, 14146, 16718, 18004, 22022, 28292, 33436, 44044, 49511, 58513, 77803, 91949, 99022, 117026, 155606, 183898, 198044, 234052, 311212, 367796, 544621, 643643, 1011439, 1089242, 1287286, 2022878, 2178484, 2574572, 4045756, 7080073, 14160146, 28320292]

約数ペア:

[(1, 28320292), (2, 14160146), (4, 7080073), (7, 4045756), (11, 2574572), (13, 2178484), (14, 2022878), (22, 1287286), (26, 1089242), (28, 1011439), (44, 643643), (52, 544621), (77, 367796), (91, 311212), (121, 234052), (143, 198044), (154, 183898), (182, 155606), (242, 117026), (286, 99022), (308, 91949), (364, 77803), (484, 58513), (572, 49511), (643, 44044), (847, 33436), (1001, 28292), (1286, 22022), (1573, 18004), (1694, 16718), (2002, 14146), (2572, 11011), (3146, 9002), (3388, 8359), (4004, 7073), (4501, 6292)]