21638554

素因数分解:

$2^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{3779}}^1$

素因数の和:4197

約数の個数: 16

約数和(自身を含む): 37195200

約数和(自身を除く): 15556646

約数列:

[1, 2, 7, 14, 409, 818, 2863, 3779, 5726, 7558, 26453, 52906, 1545611, 3091222, 10819277, 21638554]

約数ペア:

[(1, 21638554), (2, 10819277), (7, 3091222), (14, 1545611), (409, 52906), (818, 26453), (2863, 7558), (3779, 5726)]