21654200

素因数分解:

$2^3\times 5^2\times {\mathrm{108271}}^1$

素因数の和:108287

約数の個数: 24

約数和(自身を含む): 50346480

約数和(自身を除く): 28692280

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 108271, 216542, 433084, 541355, 866168, 1082710, 2165420, 2706775, 4330840, 5413550, 10827100, 21654200]

約数ペア:

[(1, 21654200), (2, 10827100), (4, 5413550), (5, 4330840), (8, 2706775), (10, 2165420), (20, 1082710), (25, 866168), (40, 541355), (50, 433084), (100, 216542), (200, 108271)]