990800

素因数分解:

$2^4\times 5^2\times {\mathrm{2477}}^1$

素因数の和:2495

約数の個数: 30

約数和(自身を含む): 2381358

約数和(自身を除く): 1390558

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 2477, 4954, 9908, 12385, 19816, 24770, 39632, 49540, 61925, 99080, 123850, 198160, 247700, 495400, 990800]

約数ペア:

[(1, 990800), (2, 495400), (4, 247700), (5, 198160), (8, 123850), (10, 99080), (16, 61925), (20, 49540), (25, 39632), (40, 24770), (50, 19816), (80, 12385), (100, 9908), (200, 4954), (400, 2477)]