19715241

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{281}}^1$

素因数の和:561

約数の個数: 32

約数和(自身を含む): 32594688

約数和(自身を除く): 12879447

約数列:

[1, 3, 7, 13, 21, 39, 91, 257, 273, 281, 771, 843, 1799, 1967, 3341, 3653, 5397, 5901, 10023, 10959, 23387, 25571, 70161, 72217, 76713, 216651, 505519, 938821, 1516557, 2816463, 6571747, 19715241]

約数ペア:

[(1, 19715241), (3, 6571747), (7, 2816463), (13, 1516557), (21, 938821), (39, 505519), (91, 216651), (257, 76713), (273, 72217), (281, 70161), (771, 25571), (843, 23387), (1799, 10959), (1967, 10023), (3341, 5901), (3653, 5397)]