21321146

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{138449}}^1$

素因数の和:138469

約数の個数: 16

約数和(自身を含む): 39873600

約数和(自身を除く): 18552454

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 138449, 276898, 969143, 1522939, 1938286, 3045878, 10660573, 21321146]

約数ペア:

[(1, 21321146), (2, 10660573), (7, 3045878), (11, 1938286), (14, 1522939), (22, 969143), (77, 276898), (154, 138449)]