20756890

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{3851}}^1$

素因数の和:3883

約数の個数: 48

約数和(自身を含む): 47425824

約数和(自身を除く): 26668934

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 49, 55, 70, 77, 98, 110, 154, 245, 385, 490, 539, 770, 1078, 2695, 3851, 5390, 7702, 19255, 26957, 38510, 42361, 53914, 84722, 134785, 188699, 211805, 269570, 296527, 377398, 423610, 593054, 943495, 1482635, 1886990, 2075689, 2965270, 4151378, 10378445, 20756890]

約数ペア:

[(1, 20756890), (2, 10378445), (5, 4151378), (7, 2965270), (10, 2075689), (11, 1886990), (14, 1482635), (22, 943495), (35, 593054), (49, 423610), (55, 377398), (70, 296527), (77, 269570), (98, 211805), (110, 188699), (154, 134785), (245, 84722), (385, 53914), (490, 42361), (539, 38510), (770, 26957), (1078, 19255), (2695, 7702), (3851, 5390)]