78804560

素因数分解:

$2^4\times 5^1\times {\mathrm{985057}}^1$

素因数の和:985070

約数の個数: 20

約数和(自身を含む): 183220788

約数和(自身を除く): 104416228

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 985057, 1970114, 3940228, 4925285, 7880456, 9850570, 15760912, 19701140, 39402280, 78804560]

約数ペア:

[(1, 78804560), (2, 39402280), (4, 19701140), (5, 15760912), (8, 9850570), (10, 7880456), (16, 4925285), (20, 3940228), (40, 1970114), (80, 985057)]