21268912

素因数分解:

$2^4\times 7^1\times {\mathrm{189901}}^1$

素因数の和:189916

約数の個数: 20

約数和(自身を含む): 47095696

約数和(自身を除く): 25826784

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 189901, 379802, 759604, 1329307, 1519208, 2658614, 3038416, 5317228, 10634456, 21268912]

約数ペア:

[(1, 21268912), (2, 10634456), (4, 5317228), (7, 3038416), (8, 2658614), (14, 1519208), (16, 1329307), (28, 759604), (56, 379802), (112, 189901)]