16920351

素因数分解:

$3^2\times 7^1\times {\mathrm{491}}^1\times {\mathrm{547}}^1$

素因数の和:1051

約数の個数: 24

約数和(自身を含む): 28040064

約数和(自身を除く): 11119713

約数列:

[1, 3, 7, 9, 21, 63, 491, 547, 1473, 1641, 3437, 3829, 4419, 4923, 10311, 11487, 30933, 34461, 268577, 805731, 1880039, 2417193, 5640117, 16920351]

約数ペア:

[(1, 16920351), (3, 5640117), (7, 2417193), (9, 1880039), (21, 805731), (63, 268577), (491, 34461), (547, 30933), (1473, 11487), (1641, 10311), (3437, 4923), (3829, 4419)]