21093177

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 34670592

約数和(自身を除く): 13577415

約数列:

[1, 3, 7, 21, 43, 47, 49, 71, 129, 141, 147, 213, 301, 329, 497, 903, 987, 1491, 2021, 2107, 2303, 3053, 3337, 3479, 6063, 6321, 6909, 9159, 10011, 10437, 14147, 21371, 23359, 42441, 64113, 70077, 99029, 143491, 149597, 163513, 297087, 430473, 448791, 490539, 1004437, 3013311, 7031059, 21093177]

約数ペア:

[(1, 21093177), (3, 7031059), (7, 3013311), (21, 1004437), (43, 490539), (47, 448791), (49, 430473), (71, 297087), (129, 163513), (141, 149597), (147, 143491), (213, 99029), (301, 70077), (329, 64113), (497, 42441), (903, 23359), (987, 21371), (1491, 14147), (2021, 10437), (2107, 10011), (2303, 9159), (3053, 6909), (3337, 6321), (3479, 6063)]