28191723

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{239}}^1$

素因数の和:427

約数の個数: 32

約数和(自身を含む): 44513280

約数和(自身を除く): 16321557

約数列:

[1, 3, 7, 21, 41, 123, 137, 239, 287, 411, 717, 861, 959, 1673, 2877, 5019, 5617, 9799, 16851, 29397, 32743, 39319, 68593, 98229, 117957, 205779, 229201, 687603, 1342463, 4027389, 9397241, 28191723]

約数ペア:

[(1, 28191723), (3, 9397241), (7, 4027389), (21, 1342463), (41, 687603), (123, 229201), (137, 205779), (239, 117957), (287, 98229), (411, 68593), (717, 39319), (861, 32743), (959, 29397), (1673, 16851), (2877, 9799), (5019, 5617)]