21419288

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{243401}}^1$

素因数の和:243418

約数の個数: 16

約数和(自身を含む): 43812360

約数和(自身を除く): 22393072

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 243401, 486802, 973604, 1947208, 2677411, 5354822, 10709644, 21419288]

約数ペア:

[(1, 21419288), (2, 10709644), (4, 5354822), (8, 2677411), (11, 1947208), (22, 973604), (44, 486802), (88, 243401)]