21042100

素因数分解:

$2^2\times 5^2\times {\mathrm{210421}}^1$

素因数の和:210435

約数の個数: 18

約数和(自身を含む): 45661574

約数和(自身を除く): 24619474

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 210421, 420842, 841684, 1052105, 2104210, 4208420, 5260525, 10521050, 21042100]

約数ペア:

[(1, 21042100), (2, 10521050), (4, 5260525), (5, 4208420), (10, 2104210), (20, 1052105), (25, 841684), (50, 420842), (100, 210421)]