28091007

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{179}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 48522240

約数和(自身を除く): 20431233

約数列:

[1, 3, 7, 9, 21, 47, 53, 63, 141, 159, 179, 329, 371, 423, 477, 537, 987, 1113, 1253, 1611, 2491, 2961, 3339, 3759, 7473, 8413, 9487, 11277, 17437, 22419, 25239, 28461, 52311, 58891, 66409, 75717, 85383, 156933, 176673, 199227, 445889, 530019, 597681, 1337667, 3121223, 4013001, 9363669, 28091007]

約数ペア:

[(1, 28091007), (3, 9363669), (7, 4013001), (9, 3121223), (21, 1337667), (47, 597681), (53, 530019), (63, 445889), (141, 199227), (159, 176673), (179, 156933), (329, 85383), (371, 75717), (423, 66409), (477, 58891), (537, 52311), (987, 28461), (1113, 25239), (1253, 22419), (1611, 17437), (2491, 11277), (2961, 9487), (3339, 8413), (3759, 7473)]