21180500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{3851}}^1$

素因数の和:3881

約数の個数: 48

約数和(自身を含む): 50476608

約数和(自身を除く): 29296108

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 220, 250, 275, 500, 550, 1100, 1375, 2750, 3851, 5500, 7702, 15404, 19255, 38510, 42361, 77020, 84722, 96275, 169444, 192550, 211805, 385100, 423610, 481375, 847220, 962750, 1059025, 1925500, 2118050, 4236100, 5295125, 10590250, 21180500]

約数ペア:

[(1, 21180500), (2, 10590250), (4, 5295125), (5, 4236100), (10, 2118050), (11, 1925500), (20, 1059025), (22, 962750), (25, 847220), (44, 481375), (50, 423610), (55, 385100), (100, 211805), (110, 192550), (125, 169444), (220, 96275), (250, 84722), (275, 77020), (500, 42361), (550, 38510), (1100, 19255), (1375, 15404), (2750, 7702), (3851, 5500)]