211978900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{43261}}^1$

素因数の和:43289

約数の個数: 54

約数和(自身を含む): 535107678

約数和(自身を除く): 323128778

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, 43261, 86522, 173044, 216305, 302827, 432610, 605654, 865220, 1081525, 1211308, 1514135, 2119789, 2163050, 3028270, 4239578, 4326100, 6056540, 7570675, 8479156, 10598945, 15141350, 21197890, 30282700, 42395780, 52994725, 105989450, 211978900]

約数ペア:

[(1, 211978900), (2, 105989450), (4, 52994725), (5, 42395780), (7, 30282700), (10, 21197890), (14, 15141350), (20, 10598945), (25, 8479156), (28, 7570675), (35, 6056540), (49, 4326100), (50, 4239578), (70, 3028270), (98, 2163050), (100, 2119789), (140, 1514135), (175, 1211308), (196, 1081525), (245, 865220), (350, 605654), (490, 432610), (700, 302827), (980, 216305), (1225, 173044), (2450, 86522), (4900, 43261)]