21212445

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{239}}^1$

素因数の和:405

約数の個数: 32

約数和(自身を含む): 34997760

約数和(自身を除く): 13785315

約数列:

[1, 3, 5, 15, 61, 97, 183, 239, 291, 305, 485, 717, 915, 1195, 1455, 3585, 5917, 14579, 17751, 23183, 29585, 43737, 69549, 72895, 88755, 115915, 218685, 347745, 1414163, 4242489, 7070815, 21212445]

約数ペア:

[(1, 21212445), (3, 7070815), (5, 4242489), (15, 1414163), (61, 347745), (97, 218685), (183, 115915), (239, 88755), (291, 72895), (305, 69549), (485, 43737), (717, 29585), (915, 23183), (1195, 17751), (1455, 14579), (3585, 5917)]