21285640

素因数分解:

$2^3\times 5^1\times {\mathrm{532141}}^1$

素因数の和:532152

約数の個数: 16

約数和(自身を含む): 47892780

約数和(自身を除く): 26607140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 532141, 1064282, 2128564, 2660705, 4257128, 5321410, 10642820, 21285640]

約数ペア:

[(1, 21285640), (2, 10642820), (4, 5321410), (5, 4257128), (8, 2660705), (10, 2128564), (20, 1064282), (40, 532141)]