20956551

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{353}}^1$

素因数の和:631

約数の個数: 32

約数和(自身を含む): 35071488

約数和(自身を除く): 14114937

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 257, 353, 771, 1059, 1799, 2471, 2827, 3883, 5397, 7413, 8481, 11649, 19789, 27181, 59367, 81543, 90721, 272163, 635047, 997931, 1905141, 2993793, 6985517, 20956551]

約数ペア:

[(1, 20956551), (3, 6985517), (7, 2993793), (11, 1905141), (21, 997931), (33, 635047), (77, 272163), (231, 90721), (257, 81543), (353, 59367), (771, 27181), (1059, 19789), (1799, 11649), (2471, 8481), (2827, 7413), (3883, 5397)]