21871094

素因数分解:

$2^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{11239}}^1$

素因数の和:11387

約数の個数: 16

約数和(自身を含む): 37766400

約数和(自身を除く): 15895306

約数列:

[1, 2, 7, 14, 139, 278, 973, 1946, 11239, 22478, 78673, 157346, 1562221, 3124442, 10935547, 21871094]

約数ペア:

[(1, 21871094), (2, 10935547), (7, 3124442), (14, 1562221), (139, 157346), (278, 78673), (973, 22478), (1946, 11239)]