21317821

素因数分解:

$7^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{727}}^1$

素因数の和:864

約数の個数: 16

約数和(自身を含む): 25159680

約数和(自身を除く): 3841859

約数列:

[1, 7, 59, 71, 413, 497, 727, 4189, 5089, 29323, 42893, 51617, 300251, 361319, 3045403, 21317821]

約数ペア:

[(1, 21317821), (7, 3045403), (59, 361319), (71, 300251), (413, 51617), (497, 42893), (727, 29323), (4189, 5089)]