13000405

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:321

約数の個数: 32

約数和(自身を含む): 18247680

約数和(自身を除く): 5247275

約数列:

[1, 5, 11, 23, 43, 55, 115, 215, 239, 253, 473, 989, 1195, 1265, 2365, 2629, 4945, 5497, 10277, 10879, 13145, 27485, 51385, 54395, 60467, 113047, 236371, 302335, 565235, 1181855, 2600081, 13000405]

約数ペア:

[(1, 13000405), (5, 2600081), (11, 1181855), (23, 565235), (43, 302335), (55, 236371), (115, 113047), (215, 60467), (239, 54395), (253, 51385), (473, 27485), (989, 13145), (1195, 10879), (1265, 10277), (2365, 5497), (2629, 4945)]