21326305

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4261}}^1$

素因数の和:4297

約数の個数: 32

約数和(自身を含む): 34368768

約数和(自身を除く): 13042463

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 385, 455, 715, 1001, 4261, 5005, 21305, 29827, 46871, 55393, 149135, 234355, 276965, 328097, 387751, 609323, 1640485, 1938755, 3046615, 4265261, 21326305]

約数ペア:

[(1, 21326305), (5, 4265261), (7, 3046615), (11, 1938755), (13, 1640485), (35, 609323), (55, 387751), (65, 328097), (77, 276965), (91, 234355), (143, 149135), (385, 55393), (455, 46871), (715, 29827), (1001, 21305), (4261, 5005)]