21306866

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{11443}}^1$

素因数の和:11478

約数の個数: 24

約数和(自身を含む): 39138480

約数和(自身を除く): 17831614

約数列:

[1, 2, 7, 14, 19, 38, 49, 98, 133, 266, 931, 1862, 11443, 22886, 80101, 160202, 217417, 434834, 560707, 1121414, 1521919, 3043838, 10653433, 21306866]

約数ペア:

[(1, 21306866), (2, 10653433), (7, 3043838), (14, 1521919), (19, 1121414), (38, 560707), (49, 434834), (98, 217417), (133, 160202), (266, 80101), (931, 22886), (1862, 11443)]