21000339395

素因数分解:

$5^1\times 7^2\times {\mathrm{631}}^1\times {\mathrm{135841}}^1$

素因数の和:136491

約数の個数: 24

約数和(自身を含む): 29361433248

約数和(自身を除く): 8361093853

約数列:

[1, 5, 7, 35, 49, 245, 631, 3155, 4417, 22085, 30919, 135841, 154595, 679205, 950887, 4754435, 6656209, 33281045, 85715671, 428578355, 600009697, 3000048485, 4200067879, 21000339395]

約数ペア:

[(1, 21000339395), (5, 4200067879), (7, 3000048485), (35, 600009697), (49, 428578355), (245, 85715671), (631, 33281045), (3155, 6656209), (4417, 4754435), (22085, 950887), (30919, 679205), (135841, 154595)]