20695280

素因数分解:

$2^4\times 5^1\times {\mathrm{258691}}^1$

素因数の和:258704

約数の個数: 20

約数和(自身を含む): 48116712

約数和(自身を除く): 27421432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 258691, 517382, 1034764, 1293455, 2069528, 2586910, 4139056, 5173820, 10347640, 20695280]

約数ペア:

[(1, 20695280), (2, 10347640), (4, 5173820), (5, 4139056), (8, 2586910), (10, 2069528), (16, 1293455), (20, 1034764), (40, 517382), (80, 258691)]