20820261

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{467}}^1$

素因数の和:681

約数の個数: 32

約数和(自身を含む): 34864128

約数和(自身を除く): 14043867

約数列:

[1, 3, 7, 11, 21, 33, 77, 193, 231, 467, 579, 1351, 1401, 2123, 3269, 4053, 5137, 6369, 9807, 14861, 15411, 35959, 44583, 90131, 107877, 270393, 630917, 991441, 1892751, 2974323, 6940087, 20820261]

約数ペア:

[(1, 20820261), (3, 6940087), (7, 2974323), (11, 1892751), (21, 991441), (33, 630917), (77, 270393), (193, 107877), (231, 90131), (467, 44583), (579, 35959), (1351, 15411), (1401, 14861), (2123, 9807), (3269, 6369), (4053, 5137)]