21132650

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{499}}^1$

素因数の和:540

約数の個数: 72

約数和(自身を含む): 49476000

約数和(自身を除く): 28343350

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 25, 35, 50, 55, 70, 77, 110, 121, 154, 175, 242, 275, 350, 385, 499, 550, 605, 770, 847, 998, 1210, 1694, 1925, 2495, 3025, 3493, 3850, 4235, 4990, 5489, 6050, 6986, 8470, 10978, 12475, 17465, 21175, 24950, 27445, 34930, 38423, 42350, 54890, 60379, 76846, 87325, 120758, 137225, 174650, 192115, 274450, 301895, 384230, 422653, 603790, 845306, 960575, 1509475, 1921150, 2113265, 3018950, 4226530, 10566325, 21132650]

約数ペア:

[(1, 21132650), (2, 10566325), (5, 4226530), (7, 3018950), (10, 2113265), (11, 1921150), (14, 1509475), (22, 960575), (25, 845306), (35, 603790), (50, 422653), (55, 384230), (70, 301895), (77, 274450), (110, 192115), (121, 174650), (154, 137225), (175, 120758), (242, 87325), (275, 76846), (350, 60379), (385, 54890), (499, 42350), (550, 38423), (605, 34930), (770, 27445), (847, 24950), (998, 21175), (1210, 17465), (1694, 12475), (1925, 10978), (2495, 8470), (3025, 6986), (3493, 6050), (3850, 5489), (4235, 4990)]