42990260

素因数分解:

$2^2\times 5^1\times {\mathrm{809}}^1\times {\mathrm{2657}}^1$

素因数の和:3475

約数の個数: 24

約数和(自身を含む): 90425160

約数和(自身を除く): 47434900

約数列:

[1, 2, 4, 5, 10, 20, 809, 1618, 2657, 3236, 4045, 5314, 8090, 10628, 13285, 16180, 26570, 53140, 2149513, 4299026, 8598052, 10747565, 21495130, 42990260]

約数ペア:

[(1, 42990260), (2, 21495130), (4, 10747565), (5, 8598052), (10, 4299026), (20, 2149513), (809, 53140), (1618, 26570), (2657, 16180), (3236, 13285), (4045, 10628), (5314, 8090)]