18221749

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{211}}^1$

素因数の和:317

約数の個数: 24

約数和(自身を含む): 22967232

約数和(自身を除く): 4745483

約数列:

[1, 7, 13, 73, 91, 169, 211, 511, 949, 1183, 1477, 2743, 6643, 12337, 15403, 19201, 35659, 86359, 107821, 200239, 249613, 1401673, 2603107, 18221749]

約数ペア:

[(1, 18221749), (7, 2603107), (13, 1401673), (73, 249613), (91, 200239), (169, 107821), (211, 86359), (511, 35659), (949, 19201), (1183, 15403), (1477, 12337), (2743, 6643)]