21109688

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{49787}}^1$

素因数の和:49846

約数の個数: 16

約数和(自身を含む): 40328280

約数和(自身を除く): 19218592

約数列:

[1, 2, 4, 8, 53, 106, 212, 424, 49787, 99574, 199148, 398296, 2638711, 5277422, 10554844, 21109688]

約数ペア:

[(1, 21109688), (2, 10554844), (4, 5277422), (8, 2638711), (53, 398296), (106, 199148), (212, 99574), (424, 49787)]