21000751120

素因数分解:

$2^4\times 5^1\times {\mathrm{262509389}}^1$

素因数の和:262509402

約数の個数: 20

約数和(自身を含む): 48826746540

約数和(自身を除く): 27825995420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 262509389, 525018778, 1050037556, 1312546945, 2100075112, 2625093890, 4200150224, 5250187780, 10500375560, 21000751120]

約数ペア:

[(1, 21000751120), (2, 10500375560), (4, 5250187780), (5, 4200150224), (8, 2625093890), (10, 2100075112), (16, 1312546945), (20, 1050037556), (40, 525018778), (80, 262509389)]