21699964

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{643}}^1$

素因数の和:730

約数の個数: 48

約数和(自身を含む): 45440640

約数和(自身を除く): 23740676

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 59, 118, 143, 236, 286, 572, 643, 649, 767, 1286, 1298, 1534, 2572, 2596, 3068, 7073, 8359, 8437, 14146, 16718, 16874, 28292, 33436, 33748, 37937, 75874, 91949, 151748, 183898, 367796, 417307, 493181, 834614, 986362, 1669228, 1972724, 5424991, 10849982, 21699964]

約数ペア:

[(1, 21699964), (2, 10849982), (4, 5424991), (11, 1972724), (13, 1669228), (22, 986362), (26, 834614), (44, 493181), (52, 417307), (59, 367796), (118, 183898), (143, 151748), (236, 91949), (286, 75874), (572, 37937), (643, 33748), (649, 33436), (767, 28292), (1286, 16874), (1298, 16718), (1534, 14146), (2572, 8437), (2596, 8359), (3068, 7073)]