19859427

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{353}}^1$

素因数の和:432

約数の個数: 48

約数和(自身を含む): 35343360

約数和(自身を除く): 15483933

約数列:

[1, 3, 7, 9, 19, 21, 47, 57, 63, 133, 141, 171, 329, 353, 399, 423, 893, 987, 1059, 1197, 2471, 2679, 2961, 3177, 6251, 6707, 7413, 8037, 16591, 18753, 20121, 22239, 46949, 49773, 56259, 60363, 116137, 140847, 149319, 315229, 348411, 422541, 945687, 1045233, 2206603, 2837061, 6619809, 19859427]

約数ペア:

[(1, 19859427), (3, 6619809), (7, 2837061), (9, 2206603), (19, 1045233), (21, 945687), (47, 422541), (57, 348411), (63, 315229), (133, 149319), (141, 140847), (171, 116137), (329, 60363), (353, 56259), (399, 49773), (423, 46949), (893, 22239), (987, 20121), (1059, 18753), (1197, 16591), (2471, 8037), (2679, 7413), (2961, 6707), (3177, 6251)]