21586019

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1$

素因数の和:184

約数の個数: 32

約数和(自身を含む): 27955200

約数和(自身を除く): 6369181

約数列:

[1, 7, 13, 47, 49, 91, 103, 329, 343, 611, 637, 721, 1339, 2303, 4277, 4459, 4841, 5047, 9373, 16121, 29939, 33887, 35329, 62933, 65611, 209573, 237209, 440531, 459277, 1660463, 3083717, 21586019]

約数ペア:

[(1, 21586019), (7, 3083717), (13, 1660463), (47, 459277), (49, 440531), (91, 237209), (103, 209573), (329, 65611), (343, 62933), (611, 35329), (637, 33887), (721, 29939), (1339, 16121), (2303, 9373), (4277, 5047), (4459, 4841)]