21380784

素因数分解:

$2^4\times 3^1\times {\mathrm{445433}}^1$

素因数の和:445444

約数の個数: 20

約数和(自身を含む): 55233816

約数和(自身を除く): 33853032

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 445433, 890866, 1336299, 1781732, 2672598, 3563464, 5345196, 7126928, 10690392, 21380784]

約数ペア:

[(1, 21380784), (2, 10690392), (3, 7126928), (4, 5345196), (6, 3563464), (8, 2672598), (12, 1781732), (16, 1336299), (24, 890866), (48, 445433)]