21049240

素因数分解:

$2^3\times 5^1\times {\mathrm{526231}}^1$

素因数の和:526242

約数の個数: 16

約数和(自身を含む): 47360880

約数和(自身を除く): 26311640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 526231, 1052462, 2104924, 2631155, 4209848, 5262310, 10524620, 21049240]

約数ペア:

[(1, 21049240), (2, 10524620), (4, 5262310), (5, 4209848), (8, 2631155), (10, 2104924), (20, 1052462), (40, 526231)]