21800121

素因数分解:

$3^1\times 7^1\times {\mathrm{853}}^1\times {\mathrm{1217}}^1$

素因数の和:2080

約数の個数: 16

約数和(自身を含む): 33285504

約数和(自身を除く): 11485383

約数列:

[1, 3, 7, 21, 853, 1217, 2559, 3651, 5971, 8519, 17913, 25557, 1038101, 3114303, 7266707, 21800121]

約数ペア:

[(1, 21800121), (3, 7266707), (7, 3114303), (21, 1038101), (853, 25557), (1217, 17913), (2559, 8519), (3651, 5971)]