21871129

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{769}}^1$

素因数の和:1032

約数の個数: 16

約数和(自身を含む): 26611200

約数和(自身を除く): 4740071

約数列:

[1, 7, 17, 119, 239, 769, 1673, 4063, 5383, 13073, 28441, 91511, 183791, 1286537, 3124447, 21871129]

約数ペア:

[(1, 21871129), (7, 3124447), (17, 1286537), (119, 183791), (239, 91511), (769, 28441), (1673, 13073), (4063, 5383)]