21288872

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{241919}}^1$

素因数の和:241936

約数の個数: 16

約数和(自身を含む): 43545600

約数和(自身を除く): 22256728

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 241919, 483838, 967676, 1935352, 2661109, 5322218, 10644436, 21288872]

約数ペア:

[(1, 21288872), (2, 10644436), (4, 5322218), (8, 2661109), (11, 1935352), (22, 967676), (44, 483838), (88, 241919)]