21178794

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{491}}^1$

素因数の和:595

約数の個数: 64

約数和(自身を含む): 52899840

約数和(自身を除く): 31721046

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 79, 91, 158, 182, 237, 273, 474, 491, 546, 553, 982, 1027, 1106, 1473, 1659, 2054, 2946, 3081, 3318, 3437, 6162, 6383, 6874, 7189, 10311, 12766, 14378, 19149, 20622, 21567, 38298, 38789, 43134, 44681, 77578, 89362, 116367, 134043, 232734, 268086, 271523, 504257, 543046, 814569, 1008514, 1512771, 1629138, 3025542, 3529799, 7059598, 10589397, 21178794]

約数ペア:

[(1, 21178794), (2, 10589397), (3, 7059598), (6, 3529799), (7, 3025542), (13, 1629138), (14, 1512771), (21, 1008514), (26, 814569), (39, 543046), (42, 504257), (78, 271523), (79, 268086), (91, 232734), (158, 134043), (182, 116367), (237, 89362), (273, 77578), (474, 44681), (491, 43134), (546, 38789), (553, 38298), (982, 21567), (1027, 20622), (1106, 19149), (1473, 14378), (1659, 12766), (2054, 10311), (2946, 7189), (3081, 6874), (3318, 6383), (3437, 6162)]