20686393

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{7333}}^1$

素因数の和:7384

約数の個数: 16

約数和(自身を含む): 26285056

約数和(自身を除く): 5598663

約数列:

[1, 7, 13, 31, 91, 217, 403, 2821, 7333, 51331, 95329, 227323, 667303, 1591261, 2955199, 20686393]

約数ペア:

[(1, 20686393), (7, 2955199), (13, 1591261), (31, 667303), (91, 227323), (217, 95329), (403, 51331), (2821, 7333)]