21369640

素因数分解:

$2^3\times 5^1\times {\mathrm{534241}}^1$

素因数の和:534252

約数の個数: 16

約数和(自身を含む): 48081780

約数和(自身を除く): 26712140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 534241, 1068482, 2136964, 2671205, 4273928, 5342410, 10684820, 21369640]

約数ペア:

[(1, 21369640), (2, 10684820), (4, 5342410), (5, 4273928), (8, 2671205), (10, 2136964), (20, 1068482), (40, 534241)]