16921317

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{2677}}^1$

素因数の和:2737

約数の個数: 24

約数和(自身を含む): 26865696

約数和(自身を除く): 9944379

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 903, 2107, 2677, 6321, 8031, 18739, 56217, 115111, 131173, 345333, 393519, 805777, 2417331, 5640439, 16921317]

約数ペア:

[(1, 16921317), (3, 5640439), (7, 2417331), (21, 805777), (43, 393519), (49, 345333), (129, 131173), (147, 115111), (301, 56217), (903, 18739), (2107, 8031), (2677, 6321)]