20321390

素因数分解:

$2^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{43237}}^1$

素因数の和:43291

約数の個数: 16

約数和(自身を含む): 37357632

約数和(自身を除く): 17036242

約数列:

[1, 2, 5, 10, 47, 94, 235, 470, 43237, 86474, 216185, 432370, 2032139, 4064278, 10160695, 20321390]

約数ペア:

[(1, 20321390), (2, 10160695), (5, 4064278), (10, 2032139), (47, 432370), (94, 216185), (235, 86474), (470, 43237)]