20749144

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{103}}^1\times {\mathrm{149}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 42822000

約数和(自身を除く): 22072856

約数列:

[1, 2, 4, 8, 13, 26, 52, 103, 104, 149, 169, 206, 298, 338, 412, 596, 676, 824, 1192, 1339, 1352, 1937, 2678, 3874, 5356, 7748, 10712, 15347, 15496, 17407, 25181, 30694, 34814, 50362, 61388, 69628, 100724, 122776, 139256, 199511, 201448, 399022, 798044, 1596088, 2593643, 5187286, 10374572, 20749144]

約数ペア:

[(1, 20749144), (2, 10374572), (4, 5187286), (8, 2593643), (13, 1596088), (26, 798044), (52, 399022), (103, 201448), (104, 199511), (149, 139256), (169, 122776), (206, 100724), (298, 69628), (338, 61388), (412, 50362), (596, 34814), (676, 30694), (824, 25181), (1192, 17407), (1339, 15496), (1352, 15347), (1937, 10712), (2678, 7748), (3874, 5356)]