20156180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8329}}^1$

素因数の和:8360

約数の個数: 36

約数和(自身を含む): 46531380

約数和(自身を除く): 26375200

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8329, 16658, 33316, 41645, 83290, 91619, 166580, 183238, 366476, 458095, 916190, 1007809, 1832380, 2015618, 4031236, 5039045, 10078090, 20156180]

約数ペア:

[(1, 20156180), (2, 10078090), (4, 5039045), (5, 4031236), (10, 2015618), (11, 1832380), (20, 1007809), (22, 916190), (44, 458095), (55, 366476), (110, 183238), (121, 166580), (220, 91619), (242, 83290), (484, 41645), (605, 33316), (1210, 16658), (2420, 8329)]