20697405

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{32089}}^1$

素因数の和:32140

約数の個数: 16

約数和(自身を含む): 33887040

約数和(自身を除く): 13189635

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 32089, 96267, 160445, 481335, 1379827, 4139481, 6899135, 20697405]

約数ペア:

[(1, 20697405), (3, 6899135), (5, 4139481), (15, 1379827), (43, 481335), (129, 160445), (215, 96267), (645, 32089)]