890441680

素因数分解:

$2^4\times 5^1\times {\mathrm{11130521}}^1$

素因数の和:11130534

約数の個数: 20

約数和(自身を含む): 2070277092

約数和(自身を除く): 1179835412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 11130521, 22261042, 44522084, 55652605, 89044168, 111305210, 178088336, 222610420, 445220840, 890441680]

約数ペア:

[(1, 890441680), (2, 445220840), (4, 222610420), (5, 178088336), (8, 111305210), (10, 89044168), (16, 55652605), (20, 44522084), (40, 22261042), (80, 11130521)]