21395738

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{9043}}^1$

素因数の和:9078

約数の個数: 24

約数和(自身を含む): 39721248

約数和(自身を除く): 18325510

約数列:

[1, 2, 7, 13, 14, 26, 91, 169, 182, 338, 1183, 2366, 9043, 18086, 63301, 117559, 126602, 235118, 822913, 1528267, 1645826, 3056534, 10697869, 21395738]

約数ペア:

[(1, 21395738), (2, 10697869), (7, 3056534), (13, 1645826), (14, 1528267), (26, 822913), (91, 235118), (169, 126602), (182, 117559), (338, 63301), (1183, 18086), (2366, 9043)]