21428336

素因数分解:

$2^4\times {\mathrm{1039}}^1\times {\mathrm{1289}}^1$

素因数の和:2336

約数の個数: 20

約数和(自身を含む): 41589600

約数和(自身を除く): 20161264

約数列:

[1, 2, 4, 8, 16, 1039, 1289, 2078, 2578, 4156, 5156, 8312, 10312, 16624, 20624, 1339271, 2678542, 5357084, 10714168, 21428336]

約数ペア:

[(1, 21428336), (2, 10714168), (4, 5357084), (8, 2678542), (16, 1339271), (1039, 20624), (1289, 16624), (2078, 10312), (2578, 8312), (4156, 5156)]