20806266

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^2\times {\mathrm{17}}^2\times {\mathrm{71}}^1$

素因数の和:136

約数の個数: 72

約数和(自身を含む): 48540384

約数和(自身を除く): 27734118

約数列:

[1, 2, 3, 6, 13, 17, 26, 34, 39, 51, 71, 78, 102, 142, 169, 213, 221, 289, 338, 426, 442, 507, 578, 663, 867, 923, 1014, 1207, 1326, 1734, 1846, 2414, 2769, 2873, 3621, 3757, 5538, 5746, 7242, 7514, 8619, 11271, 11999, 15691, 17238, 20519, 22542, 23998, 31382, 35997, 41038, 47073, 48841, 61557, 71994, 94146, 97682, 123114, 146523, 203983, 266747, 293046, 407966, 533494, 611949, 800241, 1223898, 1600482, 3467711, 6935422, 10403133, 20806266]

約数ペア:

[(1, 20806266), (2, 10403133), (3, 6935422), (6, 3467711), (13, 1600482), (17, 1223898), (26, 800241), (34, 611949), (39, 533494), (51, 407966), (71, 293046), (78, 266747), (102, 203983), (142, 146523), (169, 123114), (213, 97682), (221, 94146), (289, 71994), (338, 61557), (426, 48841), (442, 47073), (507, 41038), (578, 35997), (663, 31382), (867, 23998), (923, 22542), (1014, 20519), (1207, 17238), (1326, 15691), (1734, 11999), (1846, 11271), (2414, 8619), (2769, 7514), (2873, 7242), (3621, 5746), (3757, 5538)]