21138964

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{68633}}^1$

素因数の和:68655

約数の個数: 24

約数和(自身を含む): 46122048

約数和(自身を除く): 24983084

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 68633, 137266, 274532, 480431, 754963, 960862, 1509926, 1921724, 3019852, 5284741, 10569482, 21138964]

約数ペア:

[(1, 21138964), (2, 10569482), (4, 5284741), (7, 3019852), (11, 1921724), (14, 1509926), (22, 960862), (28, 754963), (44, 480431), (77, 274532), (154, 137266), (308, 68633)]