21000657616

素因数分解:

$2^4\times {\mathrm{653}}^1\times {\mathrm{2010017}}^1$

素因数の和:2010678

約数の個数: 20

約数和(自身を含む): 40751104932

約数和(自身を除く): 19750447316

約数列:

[1, 2, 4, 8, 16, 653, 1306, 2612, 5224, 10448, 2010017, 4020034, 8040068, 16080136, 32160272, 1312541101, 2625082202, 5250164404, 10500328808, 21000657616]

約数ペア:

[(1, 21000657616), (2, 10500328808), (4, 5250164404), (8, 2625082202), (16, 1312541101), (653, 32160272), (1306, 16080136), (2612, 8040068), (5224, 4020034), (10448, 2010017)]