20940560

素因数分解:

$2^4\times 5^1\times {\mathrm{261757}}^1$

素因数の和:261770

約数の個数: 20

約数和(自身を含む): 48686988

約数和(自身を除く): 27746428

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 261757, 523514, 1047028, 1308785, 2094056, 2617570, 4188112, 5235140, 10470280, 20940560]

約数ペア:

[(1, 20940560), (2, 10470280), (4, 5235140), (5, 4188112), (8, 2617570), (10, 2094056), (16, 1308785), (20, 1047028), (40, 523514), (80, 261757)]