21000819844

素因数分解:

$2^2\times {\mathrm{1801}}^1\times {\mathrm{2915161}}^1$

素因数の和:2916966

約数の個数: 12

約数和(自身を含む): 36771853468

約数和(自身を除く): 15771033624

約数列:

[1, 2, 4, 1801, 3602, 7204, 2915161, 5830322, 11660644, 5250204961, 10500409922, 21000819844]

約数ペア:

[(1, 21000819844), (2, 10500409922), (4, 5250204961), (1801, 11660644), (3602, 5830322), (7204, 2915161)]