20953023

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:164

約数の個数: 64

約数和(自身を含む): 37158912

約数和(自身を除く): 16205889

約数列:

[1, 3, 7, 13, 21, 23, 39, 47, 69, 71, 91, 141, 161, 213, 273, 299, 329, 483, 497, 611, 897, 923, 987, 1081, 1491, 1633, 1833, 2093, 2769, 3243, 3337, 4277, 4899, 6279, 6461, 7567, 10011, 11431, 12831, 14053, 19383, 21229, 22701, 23359, 34293, 42159, 43381, 63687, 70077, 76751, 98371, 130143, 148603, 230253, 295113, 303667, 445809, 537257, 911001, 997763, 1611771, 2993289, 6984341, 20953023]

約数ペア:

[(1, 20953023), (3, 6984341), (7, 2993289), (13, 1611771), (21, 997763), (23, 911001), (39, 537257), (47, 445809), (69, 303667), (71, 295113), (91, 230253), (141, 148603), (161, 130143), (213, 98371), (273, 76751), (299, 70077), (329, 63687), (483, 43381), (497, 42159), (611, 34293), (897, 23359), (923, 22701), (987, 21229), (1081, 19383), (1491, 14053), (1633, 12831), (1833, 11431), (2093, 10011), (2769, 7567), (3243, 6461), (3337, 6279), (4277, 4899)]