20782419

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{3821}}^1$

素因数の和:3875

約数の個数: 24

約数和(自身を含む): 33113808

約数和(自身を除く): 12331389

約数列:

[1, 3, 7, 21, 37, 49, 111, 147, 259, 777, 1813, 3821, 5439, 11463, 26747, 80241, 141377, 187229, 424131, 561687, 989639, 2968917, 6927473, 20782419]

約数ペア:

[(1, 20782419), (3, 6927473), (7, 2968917), (21, 989639), (37, 561687), (49, 424131), (111, 187229), (147, 141377), (259, 80241), (777, 26747), (1813, 11463), (3821, 5439)]