21000340

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{24419}}^1$

素因数の和:24471

約数の個数: 24

約数和(自身を含む): 45128160

約数和(自身を除く): 24127820

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 24419, 48838, 97676, 122095, 244190, 488380, 1050017, 2100034, 4200068, 5250085, 10500170, 21000340]

約数ペア:

[(1, 21000340), (2, 10500170), (4, 5250085), (5, 4200068), (10, 2100034), (20, 1050017), (43, 488380), (86, 244190), (172, 122095), (215, 97676), (430, 48838), (860, 24419)]