21566013

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{313}}^1$

素因数の和:533

約数の個数: 32

約数和(自身を含む): 35087616

約数和(自身を除く): 13521603

約数列:

[1, 3, 7, 17, 21, 51, 119, 193, 313, 357, 579, 939, 1351, 2191, 3281, 4053, 5321, 6573, 9843, 15963, 22967, 37247, 60409, 68901, 111741, 181227, 422863, 1026953, 1268589, 3080859, 7188671, 21566013]

約数ペア:

[(1, 21566013), (3, 7188671), (7, 3080859), (17, 1268589), (21, 1026953), (51, 422863), (119, 181227), (193, 111741), (313, 68901), (357, 60409), (579, 37247), (939, 22967), (1351, 15963), (2191, 9843), (3281, 6573), (4053, 5321)]