18022004

素因数分解:

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

素因数の和:685

約数の個数: 72

約数和(自身を含む): 43168608

約数和(自身を除く): 25146604

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 49, 52, 77, 91, 98, 143, 154, 182, 196, 286, 308, 364, 539, 572, 637, 643, 1001, 1078, 1274, 1286, 2002, 2156, 2548, 2572, 4004, 4501, 7007, 7073, 8359, 9002, 14014, 14146, 16718, 18004, 28028, 28292, 31507, 33436, 49511, 58513, 63014, 91949, 99022, 117026, 126028, 183898, 198044, 234052, 346577, 367796, 409591, 643643, 693154, 819182, 1287286, 1386308, 1638364, 2574572, 4505501, 9011002, 18022004]

約数ペア:

[(1, 18022004), (2, 9011002), (4, 4505501), (7, 2574572), (11, 1638364), (13, 1386308), (14, 1287286), (22, 819182), (26, 693154), (28, 643643), (44, 409591), (49, 367796), (52, 346577), (77, 234052), (91, 198044), (98, 183898), (143, 126028), (154, 117026), (182, 99022), (196, 91949), (286, 63014), (308, 58513), (364, 49511), (539, 33436), (572, 31507), (637, 28292), (643, 28028), (1001, 18004), (1078, 16718), (1274, 14146), (1286, 14014), (2002, 9002), (2156, 8359), (2548, 7073), (2572, 7007), (4004, 4501)]