28396240

素因数分解:

$2^4\times 5^1\times {\mathrm{354953}}^1$

素因数の和:354966

約数の個数: 20

約数和(自身を含む): 66021444

約数和(自身を除く): 37625204

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 354953, 709906, 1419812, 1774765, 2839624, 3549530, 5679248, 7099060, 14198120, 28396240]

約数ペア:

[(1, 28396240), (2, 14198120), (4, 7099060), (5, 5679248), (8, 3549530), (10, 2839624), (16, 1774765), (20, 1419812), (40, 709906), (80, 354953)]