21801200

素因数分解:

$2^4\times 5^2\times {\mathrm{54503}}^1$

素因数の和:54521

約数の個数: 30

約数和(自身を含む): 52378344

約数和(自身を除く): 30577144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 54503, 109006, 218012, 272515, 436024, 545030, 872048, 1090060, 1362575, 2180120, 2725150, 4360240, 5450300, 10900600, 21801200]

約数ペア:

[(1, 21801200), (2, 10900600), (4, 5450300), (5, 4360240), (8, 2725150), (10, 2180120), (16, 1362575), (20, 1090060), (25, 872048), (40, 545030), (50, 436024), (80, 272515), (100, 218012), (200, 109006), (400, 54503)]