21245392

素因数分解:

$2^4\times 7^1\times {\mathrm{189691}}^1$

素因数の和:189706

約数の個数: 20

約数和(自身を含む): 47043616

約数和(自身を除く): 25798224

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 189691, 379382, 758764, 1327837, 1517528, 2655674, 3035056, 5311348, 10622696, 21245392]

約数ペア:

[(1, 21245392), (2, 10622696), (4, 5311348), (7, 3035056), (8, 2655674), (14, 1517528), (16, 1327837), (28, 758764), (56, 379382), (112, 189691)]