42749780

素因数分解:

$2^2\times 5^1\times {\mathrm{2137489}}^1$

素因数の和:2137498

約数の個数: 12

約数和(自身を含む): 89774580

約数和(自身を除く): 47024800

約数列:

[1, 2, 4, 5, 10, 20, 2137489, 4274978, 8549956, 10687445, 21374890, 42749780]

約数ペア:

[(1, 42749780), (2, 21374890), (4, 10687445), (5, 8549956), (10, 4274978), (20, 2137489)]