21384986

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{66413}}^1$

素因数の和:66445

約数の個数: 16

約数和(自身を含む): 38254464

約数和(自身を除く): 16869478

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 66413, 132826, 464891, 929782, 1527499, 3054998, 10692493, 21384986]

約数ペア:

[(1, 21384986), (2, 10692493), (7, 3054998), (14, 1527499), (23, 929782), (46, 464891), (161, 132826), (322, 66413)]