208772019

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{647}}^1$

素因数の和:729

約数の個数: 64

約数和(自身を含む): 354585600

約数和(自身を除く): 145813581

約数列:

[1, 3, 9, 17, 19, 27, 37, 51, 57, 111, 153, 171, 323, 333, 459, 513, 629, 647, 703, 969, 999, 1887, 1941, 2109, 2907, 5661, 5823, 6327, 8721, 10999, 11951, 12293, 16983, 17469, 18981, 23939, 32997, 35853, 36879, 71817, 98991, 107559, 110637, 208981, 215451, 296973, 322677, 331911, 406963, 454841, 626943, 646353, 1220889, 1364523, 1880829, 3662667, 4093569, 5642487, 7732297, 10988001, 12280707, 23196891, 69590673, 208772019]

約数ペア:

[(1, 208772019), (3, 69590673), (9, 23196891), (17, 12280707), (19, 10988001), (27, 7732297), (37, 5642487), (51, 4093569), (57, 3662667), (111, 1880829), (153, 1364523), (171, 1220889), (323, 646353), (333, 626943), (459, 454841), (513, 406963), (629, 331911), (647, 322677), (703, 296973), (969, 215451), (999, 208981), (1887, 110637), (1941, 107559), (2109, 98991), (2907, 71817), (5661, 36879), (5823, 35853), (6327, 32997), (8721, 23939), (10999, 18981), (11951, 17469), (12293, 16983)]