1609840

素因数分解:

$2^4\times 5^1\times {\mathrm{20123}}^1$

素因数の和:20136

約数の個数: 20

約数和(自身を含む): 3743064

約数和(自身を除く): 2133224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 20123, 40246, 80492, 100615, 160984, 201230, 321968, 402460, 804920, 1609840]

約数ペア:

[(1, 1609840), (2, 804920), (4, 402460), (5, 321968), (8, 201230), (10, 160984), (16, 100615), (20, 80492), (40, 40246), (80, 20123)]