21004400

素因数分解:

$2^4\times 5^2\times {\mathrm{52511}}^1$

素因数の和:52529

約数の個数: 30

約数和(自身を含む): 50464032

約数和(自身を除く): 29459632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 52511, 105022, 210044, 262555, 420088, 525110, 840176, 1050220, 1312775, 2100440, 2625550, 4200880, 5251100, 10502200, 21004400]

約数ペア:

[(1, 21004400), (2, 10502200), (4, 5251100), (5, 4200880), (8, 2625550), (10, 2100440), (16, 1312775), (20, 1050220), (25, 840176), (40, 525110), (50, 420088), (80, 262555), (100, 210044), (200, 105022), (400, 52511)]