20439279

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^2\times {\mathrm{193}}^1$

素因数の和:288

約数の個数: 36

約数和(自身を含む): 34763248

約数和(自身を除く): 14323969

約数列:

[1, 3, 7, 9, 21, 41, 63, 123, 193, 287, 369, 579, 861, 1351, 1681, 1737, 2583, 4053, 5043, 7913, 11767, 12159, 15129, 23739, 35301, 55391, 71217, 105903, 166173, 324433, 498519, 973299, 2271031, 2919897, 6813093, 20439279]

約数ペア:

[(1, 20439279), (3, 6813093), (7, 2919897), (9, 2271031), (21, 973299), (41, 498519), (63, 324433), (123, 166173), (193, 105903), (287, 71217), (369, 55391), (579, 35301), (861, 23739), (1351, 15129), (1681, 12159), (1737, 11767), (2583, 7913), (4053, 5043)]