81636863

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1361}}^1$

素因数の和:1439

約数の個数: 32

約数和(自身を含む): 109831680

約数和(自身を除く): 28194817

約数列:

[1, 7, 11, 19, 41, 77, 133, 209, 287, 451, 779, 1361, 1463, 3157, 5453, 8569, 9527, 14971, 25859, 55801, 59983, 104797, 181013, 284449, 390607, 613811, 1060219, 1991143, 4296677, 7421533, 11662409, 81636863]

約数ペア:

[(1, 81636863), (7, 11662409), (11, 7421533), (19, 4296677), (41, 1991143), (77, 1060219), (133, 613811), (209, 390607), (287, 284449), (451, 181013), (779, 104797), (1361, 59983), (1463, 55801), (3157, 25859), (5453, 14971), (8569, 9527)]