21040700

素因数分解:

$2^2\times 5^2\times {\mathrm{210407}}^1$

素因数の和:210421

約数の個数: 18

約数和(自身を含む): 45658536

約数和(自身を除く): 24617836

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 210407, 420814, 841628, 1052035, 2104070, 4208140, 5260175, 10520350, 21040700]

約数ペア:

[(1, 21040700), (2, 10520350), (4, 5260175), (5, 4208140), (10, 2104070), (20, 1052035), (25, 841628), (50, 420814), (100, 210407)]