28005666

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{389}}^1$

素因数の和:491

約数の個数: 48

約数和(自身を含む): 61663680

約数和(自身を除く): 33658014

約数列:

[1, 2, 3, 6, 13, 26, 39, 71, 78, 142, 169, 213, 338, 389, 426, 507, 778, 923, 1014, 1167, 1846, 2334, 2769, 5057, 5538, 10114, 11999, 15171, 23998, 27619, 30342, 35997, 55238, 65741, 71994, 82857, 131482, 165714, 197223, 359047, 394446, 718094, 1077141, 2154282, 4667611, 9335222, 14002833, 28005666]

約数ペア:

[(1, 28005666), (2, 14002833), (3, 9335222), (6, 4667611), (13, 2154282), (26, 1077141), (39, 718094), (71, 394446), (78, 359047), (142, 197223), (169, 165714), (213, 131482), (338, 82857), (389, 71994), (426, 65741), (507, 55238), (778, 35997), (923, 30342), (1014, 27619), (1167, 23998), (1846, 15171), (2334, 11999), (2769, 10114), (5057, 5538)]