21000317756

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{477279949}}^1$

素因数の和:477279964

約数の個数: 12

約数和(自身を含む): 40091515800

約数和(自身を除く): 19091198044

約数列:

[1, 2, 4, 11, 22, 44, 477279949, 954559898, 1909119796, 5250079439, 10500158878, 21000317756]

約数ペア:

[(1, 21000317756), (2, 10500158878), (4, 5250079439), (11, 1909119796), (22, 954559898), (44, 477279949)]