51321040

素因数分解:

$2^4\times 5^1\times {\mathrm{641513}}^1$

素因数の和:641526

約数の個数: 20

約数和(自身を含む): 119321604

約数和(自身を除く): 68000564

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 641513, 1283026, 2566052, 3207565, 5132104, 6415130, 10264208, 12830260, 25660520, 51321040]

約数ペア:

[(1, 51321040), (2, 25660520), (4, 12830260), (5, 10264208), (8, 6415130), (10, 5132104), (16, 3207565), (20, 2566052), (40, 1283026), (80, 641513)]