21239982

素因数分解:

$2^1\times 3^4\times {\mathrm{131111}}^1$

素因数の和:131125

約数の個数: 20

約数和(自身を含む): 47593656

約数和(自身を除く): 26353674

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 131111, 262222, 393333, 786666, 1179999, 2359998, 3539997, 7079994, 10619991, 21239982]

約数ペア:

[(1, 21239982), (2, 10619991), (3, 7079994), (6, 3539997), (9, 2359998), (18, 1179999), (27, 786666), (54, 393333), (81, 262222), (162, 131111)]