1311475

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1$

素因数の和:291

約数の個数: 24

約数和(自身を含む): 1874880

約数和(自身を除く): 563405

約数列:

[1, 5, 11, 19, 25, 55, 95, 209, 251, 275, 475, 1045, 1255, 2761, 4769, 5225, 6275, 13805, 23845, 52459, 69025, 119225, 262295, 1311475]

約数ペア:

[(1, 1311475), (5, 262295), (11, 119225), (19, 69025), (25, 52459), (55, 23845), (95, 13805), (209, 6275), (251, 5225), (275, 4769), (475, 2761), (1045, 1255)]