21768105

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{33749}}^1$

素因数の和:33800

約数の個数: 16

約数和(自身を含む): 35640000

約数和(自身を除く): 13871895

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 33749, 101247, 168745, 506235, 1451207, 4353621, 7256035, 21768105]

約数ペア:

[(1, 21768105), (3, 7256035), (5, 4353621), (15, 1451207), (43, 506235), (129, 168745), (215, 101247), (645, 33749)]