20707725

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{6421}}^1$

素因数の和:6477

約数の個数: 24

約数和(自身を含む): 35038432

約数和(自身を除く): 14330707

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 3225, 6421, 19263, 32105, 96315, 160525, 276103, 481575, 828309, 1380515, 4141545, 6902575, 20707725]

約数ペア:

[(1, 20707725), (3, 6902575), (5, 4141545), (15, 1380515), (25, 828309), (43, 481575), (75, 276103), (129, 160525), (215, 96315), (645, 32105), (1075, 19263), (3225, 6421)]