19912389

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^3\times {\mathrm{193}}^1$

素因数の和:254

約数の個数: 32

約数和(自身を含む): 32405760

約数和(自身を除く): 12493371

約数列:

[1, 3, 7, 17, 21, 51, 119, 193, 289, 357, 579, 867, 1351, 2023, 3281, 4053, 4913, 6069, 9843, 14739, 22967, 34391, 55777, 68901, 103173, 167331, 390439, 948209, 1171317, 2844627, 6637463, 19912389]

約数ペア:

[(1, 19912389), (3, 6637463), (7, 2844627), (17, 1171317), (21, 948209), (51, 390439), (119, 167331), (193, 103173), (289, 68901), (357, 55777), (579, 34391), (867, 22967), (1351, 14739), (2023, 9843), (3281, 6069), (4053, 4913)]