18985990

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{18433}}^1$

素因数の和:18543

約数の個数: 16

約数和(自身を含む): 34508448

約数和(自身を除く): 15522458

約数列:

[1, 2, 5, 10, 103, 206, 515, 1030, 18433, 36866, 92165, 184330, 1898599, 3797198, 9492995, 18985990]

約数ペア:

[(1, 18985990), (2, 9492995), (5, 3797198), (10, 1898599), (103, 184330), (206, 92165), (515, 36866), (1030, 18433)]