21638456

素因数分解:

$2^3\times 7^1\times {\mathrm{386401}}^1$

素因数の和:386414

約数の個数: 16

約数和(自身を含む): 46368240

約数和(自身を除く): 24729784

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 386401, 772802, 1545604, 2704807, 3091208, 5409614, 10819228, 21638456]

約数ペア:

[(1, 21638456), (2, 10819228), (4, 5409614), (7, 3091208), (8, 2704807), (14, 1545604), (28, 772802), (56, 386401)]