215518919

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{3593}}^1$

素因数の和:3671

約数の個数: 32

約数和(自身を含む): 289820160

約数和(自身を除く): 74301241

約数列:

[1, 7, 11, 19, 41, 77, 133, 209, 287, 451, 779, 1463, 3157, 3593, 5453, 8569, 25151, 39523, 59983, 68267, 147313, 276661, 477869, 750937, 1031191, 1620443, 2798947, 5256559, 11343101, 19592629, 30788417, 215518919]

約数ペア:

[(1, 215518919), (7, 30788417), (11, 19592629), (19, 11343101), (41, 5256559), (77, 2798947), (133, 1620443), (209, 1031191), (287, 750937), (451, 477869), (779, 276661), (1463, 147313), (3157, 68267), (3593, 59983), (5453, 39523), (8569, 25151)]