21906416

素因数分解:

$2^4\times 7^1\times {\mathrm{195593}}^1$

素因数の和:195608

約数の個数: 20

約数和(自身を含む): 48507312

約数和(自身を除く): 26600896

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 195593, 391186, 782372, 1369151, 1564744, 2738302, 3129488, 5476604, 10953208, 21906416]

約数ペア:

[(1, 21906416), (2, 10953208), (4, 5476604), (7, 3129488), (8, 2738302), (14, 1564744), (16, 1369151), (28, 782372), (56, 391186), (112, 195593)]