21043900

素因数分解:

$2^2\times 5^2\times {\mathrm{127}}^1\times {\mathrm{1657}}^1$

素因数の和:1798

約数の個数: 36

約数和(自身を含む): 46052608

約数和(自身を除く): 25008708

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 127, 254, 508, 635, 1270, 1657, 2540, 3175, 3314, 6350, 6628, 8285, 12700, 16570, 33140, 41425, 82850, 165700, 210439, 420878, 841756, 1052195, 2104390, 4208780, 5260975, 10521950, 21043900]

約数ペア:

[(1, 21043900), (2, 10521950), (4, 5260975), (5, 4208780), (10, 2104390), (20, 1052195), (25, 841756), (50, 420878), (100, 210439), (127, 165700), (254, 82850), (508, 41425), (635, 33140), (1270, 16570), (1657, 12700), (2540, 8285), (3175, 6628), (3314, 6350)]