28409890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{167117}}^1$

素因数の和:167141

約数の個数: 16

約数和(自身を含む): 54146232

約数和(自身を除く): 25736342

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 167117, 334234, 835585, 1671170, 2840989, 5681978, 14204945, 28409890]

約数ペア:

[(1, 28409890), (2, 14204945), (5, 5681978), (10, 2840989), (17, 1671170), (34, 835585), (85, 334234), (170, 167117)]