21284438

素因数分解:

$2^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{11971}}^1$

素因数の和:12107

約数の個数: 16

約数和(自身を含む): 36777984

約数和(自身を除く): 15493546

約数列:

[1, 2, 7, 14, 127, 254, 889, 1778, 11971, 23942, 83797, 167594, 1520317, 3040634, 10642219, 21284438]

約数ペア:

[(1, 21284438), (2, 10642219), (7, 3040634), (14, 1520317), (127, 167594), (254, 83797), (889, 23942), (1778, 11971)]