81267800

素因数分解:

$2^3\times 5^2\times {\mathrm{406339}}^1$

素因数の和:406355

約数の個数: 24

約数和(自身を含む): 188948100

約数和(自身を除く): 107680300

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 406339, 812678, 1625356, 2031695, 3250712, 4063390, 8126780, 10158475, 16253560, 20316950, 40633900, 81267800]

約数ペア:

[(1, 81267800), (2, 40633900), (4, 20316950), (5, 16253560), (8, 10158475), (10, 8126780), (20, 4063390), (25, 3250712), (40, 2031695), (50, 1625356), (100, 812678), (200, 406339)]