9780405

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{28349}}^1$

素因数の和:28380

約数の個数: 16

約数和(自身を含む): 16329600

約数和(自身を除く): 6549195

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 28349, 85047, 141745, 425235, 652027, 1956081, 3260135, 9780405]

約数ペア:

[(1, 9780405), (3, 3260135), (5, 1956081), (15, 652027), (23, 425235), (69, 141745), (115, 85047), (345, 28349)]