21385240

素因数分解:

$2^3\times 5^1\times {\mathrm{534631}}^1$

素因数の和:534642

約数の個数: 16

約数和(自身を含む): 48116880

約数和(自身を除く): 26731640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 534631, 1069262, 2138524, 2673155, 4277048, 5346310, 10692620, 21385240]

約数ペア:

[(1, 21385240), (2, 10692620), (4, 5346310), (5, 4277048), (8, 2673155), (10, 2138524), (20, 1069262), (40, 534631)]