81007700

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{18839}}^1$

素因数の和:18896

約数の個数: 36

約数和(自身を含む): 179884320

約数和(自身を除く): 98876620

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 18839, 37678, 75356, 94195, 188390, 376780, 470975, 810077, 941950, 1620154, 1883900, 3240308, 4050385, 8100770, 16201540, 20251925, 40503850, 81007700]

約数ペア:

[(1, 81007700), (2, 40503850), (4, 20251925), (5, 16201540), (10, 8100770), (20, 4050385), (25, 3240308), (43, 1883900), (50, 1620154), (86, 941950), (100, 810077), (172, 470975), (215, 376780), (430, 188390), (860, 94195), (1075, 75356), (2150, 37678), (4300, 18839)]