21014917

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{577}}^1$

素因数の和:649

約数の個数: 24

約数和(自身を含む): 27059648

約数和(自身を除く): 6044731

約数列:

[1, 7, 11, 43, 77, 121, 301, 473, 577, 847, 3311, 4039, 5203, 6347, 24811, 36421, 44429, 69817, 173677, 272921, 488719, 1910447, 3002131, 21014917]

約数ペア:

[(1, 21014917), (7, 3002131), (11, 1910447), (43, 488719), (77, 272921), (121, 173677), (301, 69817), (473, 44429), (577, 36421), (847, 24811), (3311, 6347), (4039, 5203)]