213889900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{43651}}^1$

素因数の和:43679

約数の個数: 54

約数和(自身を含む): 539931588

約数和(自身を除く): 326041688

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 4900, 43651, 87302, 174604, 218255, 305557, 436510, 611114, 873020, 1091275, 1222228, 1527785, 2138899, 2182550, 3055570, 4277798, 4365100, 6111140, 7638925, 8555596, 10694495, 15277850, 21388990, 30555700, 42777980, 53472475, 106944950, 213889900]

約数ペア:

[(1, 213889900), (2, 106944950), (4, 53472475), (5, 42777980), (7, 30555700), (10, 21388990), (14, 15277850), (20, 10694495), (25, 8555596), (28, 7638925), (35, 6111140), (49, 4365100), (50, 4277798), (70, 3055570), (98, 2182550), (100, 2138899), (140, 1527785), (175, 1222228), (196, 1091275), (245, 873020), (350, 611114), (490, 436510), (700, 305557), (980, 218255), (1225, 174604), (2450, 87302), (4900, 43651)]