21122745

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{5437}}^1$

素因数の和:5489

約数の個数: 32

約数和(自身を含む): 39675648

約数和(自身を除く): 18552903

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 105, 111, 185, 259, 555, 777, 1295, 3885, 5437, 16311, 27185, 38059, 81555, 114177, 190295, 201169, 570885, 603507, 1005845, 1408183, 3017535, 4224549, 7040915, 21122745]

約数ペア:

[(1, 21122745), (3, 7040915), (5, 4224549), (7, 3017535), (15, 1408183), (21, 1005845), (35, 603507), (37, 570885), (105, 201169), (111, 190295), (185, 114177), (259, 81555), (555, 38059), (777, 27185), (1295, 16311), (3885, 5437)]