19728572

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{4987}}^1$

素因数の和:5057

約数の個数: 24

約数和(自身を含む): 36871296

約数和(自身を除く): 17142724

約数列:

[1, 2, 4, 23, 43, 46, 86, 92, 172, 989, 1978, 3956, 4987, 9974, 19948, 114701, 214441, 229402, 428882, 458804, 857764, 4932143, 9864286, 19728572]

約数ペア:

[(1, 19728572), (2, 9864286), (4, 4932143), (23, 857764), (43, 458804), (46, 428882), (86, 229402), (92, 214441), (172, 114701), (989, 19948), (1978, 9974), (3956, 4987)]