20662369

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{199}}^1$

素因数の和:389

約数の個数: 24

約数和(自身を含む): 26174400

約数和(自身を除く): 5512031

約数列:

[1, 7, 13, 49, 91, 163, 199, 637, 1141, 1393, 2119, 2587, 7987, 9751, 14833, 18109, 32437, 103831, 126763, 227059, 421681, 1589413, 2951767, 20662369]

約数ペア:

[(1, 20662369), (7, 2951767), (13, 1589413), (49, 421681), (91, 227059), (163, 126763), (199, 103831), (637, 32437), (1141, 18109), (1393, 14833), (2119, 9751), (2587, 7987)]