21511996

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{488909}}^1$

素因数の和:488924

約数の個数: 12

約数和(自身を含む): 41068440

約数和(自身を除く): 19556444

約数列:

[1, 2, 4, 11, 22, 44, 488909, 977818, 1955636, 5377999, 10755998, 21511996]

約数ペア:

[(1, 21511996), (2, 10755998), (4, 5377999), (11, 1955636), (22, 977818), (44, 488909)]