28657520

素因数分解:

$2^4\times 5^1\times {\mathrm{358219}}^1$

素因数の和:358232

約数の個数: 20

約数和(自身を含む): 66628920

約数和(自身を除く): 37971400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 358219, 716438, 1432876, 1791095, 2865752, 3582190, 5731504, 7164380, 14328760, 28657520]

約数ペア:

[(1, 28657520), (2, 14328760), (4, 7164380), (5, 5731504), (8, 3582190), (10, 2865752), (16, 1791095), (20, 1432876), (40, 716438), (80, 358219)]