18864909

素因数分解:

$3^2\times 7^1\times {\mathrm{251}}^1\times {\mathrm{1193}}^1$

素因数の和:1457

約数の個数: 24

約数和(自身を含む): 31292352

約数和(自身を除く): 12427443

約数列:

[1, 3, 7, 9, 21, 63, 251, 753, 1193, 1757, 2259, 3579, 5271, 8351, 10737, 15813, 25053, 75159, 299443, 898329, 2096101, 2694987, 6288303, 18864909]

約数ペア:

[(1, 18864909), (3, 6288303), (7, 2694987), (9, 2096101), (21, 898329), (63, 299443), (251, 75159), (753, 25053), (1193, 15813), (1757, 10737), (2259, 8351), (3579, 5271)]