205180521

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{15991}}^1$

素因数の和:16061

約数の個数: 32

約数和(自身を含む): 343891968

約数和(自身を除く): 138711447

約数列:

[1, 3, 7, 13, 21, 39, 47, 91, 141, 273, 329, 611, 987, 1833, 4277, 12831, 15991, 47973, 111937, 207883, 335811, 623649, 751577, 1455181, 2254731, 4365543, 5261039, 9770501, 15783117, 29311503, 68393507, 205180521]

約数ペア:

[(1, 205180521), (3, 68393507), (7, 29311503), (13, 15783117), (21, 9770501), (39, 5261039), (47, 4365543), (91, 2254731), (141, 1455181), (273, 751577), (329, 623649), (611, 335811), (987, 207883), (1833, 111937), (4277, 47973), (12831, 15991)]