21806384

素因数分解:

$2^4\times {\mathrm{997}}^1\times {\mathrm{1367}}^1$

素因数の和:2372

約数の個数: 20

約数和(自身を含む): 42323184

約数和(自身を除く): 20516800

約数列:

[1, 2, 4, 8, 16, 997, 1367, 1994, 2734, 3988, 5468, 7976, 10936, 15952, 21872, 1362899, 2725798, 5451596, 10903192, 21806384]

約数ペア:

[(1, 21806384), (2, 10903192), (4, 5451596), (8, 2725798), (16, 1362899), (997, 21872), (1367, 15952), (1994, 10936), (2734, 7976), (3988, 5468)]