2005803405

素因数分解:

$3^6\times 5^1\times {\mathrm{550289}}^1$

素因数の和:550312

約数の個数: 28

約数和(自身を含む): 3608801820

約数和(自身を除く): 1602998415

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 3645, 550289, 1650867, 2751445, 4952601, 8254335, 14857803, 24763005, 44573409, 74289015, 133720227, 222867045, 401160681, 668601135, 2005803405]

約数ペア:

[(1, 2005803405), (3, 668601135), (5, 401160681), (9, 222867045), (15, 133720227), (27, 74289015), (45, 44573409), (81, 24763005), (135, 14857803), (243, 8254335), (405, 4952601), (729, 2751445), (1215, 1650867), (3645, 550289)]