21820904

素因数分解:

$2^3\times 7^1\times {\mathrm{389659}}^1$

素因数の和:389672

約数の個数: 16

約数和(自身を含む): 46759200

約数和(自身を除く): 24938296

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 389659, 779318, 1558636, 2727613, 3117272, 5455226, 10910452, 21820904]

約数ペア:

[(1, 21820904), (2, 10910452), (4, 5455226), (7, 3117272), (8, 2727613), (14, 1558636), (28, 779318), (56, 389659)]