28369257

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{359}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 44789760

約数和(自身を除く): 16420503

約数列:

[1, 3, 7, 21, 53, 71, 159, 213, 359, 371, 497, 1077, 1113, 1491, 2513, 3763, 7539, 11289, 19027, 25489, 26341, 57081, 76467, 79023, 133189, 178423, 399567, 535269, 1350917, 4052751, 9456419, 28369257]

約数ペア:

[(1, 28369257), (3, 9456419), (7, 4052751), (21, 1350917), (53, 535269), (71, 399567), (159, 178423), (213, 133189), (359, 79023), (371, 76467), (497, 57081), (1077, 26341), (1113, 25489), (1491, 19027), (2513, 11289), (3763, 7539)]