21908007

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{613}}^1$

素因数の和:668

約数の個数: 36

約数和(自身を含む): 36493704

約数和(自身を除く): 14585697

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 361, 613, 627, 1083, 1839, 1881, 3249, 3971, 5517, 6743, 11647, 11913, 20229, 34941, 35739, 60687, 104823, 128117, 221293, 384351, 663879, 1153053, 1991637, 2434223, 7302669, 21908007]

約数ペア:

[(1, 21908007), (3, 7302669), (9, 2434223), (11, 1991637), (19, 1153053), (33, 663879), (57, 384351), (99, 221293), (171, 128117), (209, 104823), (361, 60687), (613, 35739), (627, 34941), (1083, 20229), (1839, 11913), (1881, 11647), (3249, 6743), (3971, 5517)]