21625840

素因数分解:

$2^4\times 5^1\times {\mathrm{270323}}^1$

素因数の和:270336

約数の個数: 20

約数和(自身を含む): 50280264

約数和(自身を除く): 28654424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 270323, 540646, 1081292, 1351615, 2162584, 2703230, 4325168, 5406460, 10812920, 21625840]

約数ペア:

[(1, 21625840), (2, 10812920), (4, 5406460), (5, 4325168), (8, 2703230), (10, 2162584), (16, 1351615), (20, 1081292), (40, 540646), (80, 270323)]