18401971

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{193}}^1\times {\mathrm{257}}^1$

素因数の和:510

約数の個数: 16

約数和(自身を含む): 21622464

約数和(自身を除く): 3220493

約数列:

[1, 7, 53, 193, 257, 371, 1351, 1799, 10229, 13621, 49601, 71603, 95347, 347207, 2628853, 18401971]

約数ペア:

[(1, 18401971), (7, 2628853), (53, 347207), (193, 95347), (257, 71603), (371, 49601), (1351, 13621), (1799, 10229)]