28121961

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{2129}}^1$

素因数の和:2193

約数の個数: 32

約数和(自身を含む): 46621440

約数和(自身を除く): 18499479

約数列:

[1, 3, 7, 17, 21, 37, 51, 111, 119, 259, 357, 629, 777, 1887, 2129, 4403, 6387, 13209, 14903, 36193, 44709, 78773, 108579, 236319, 253351, 551411, 760053, 1339141, 1654233, 4017423, 9373987, 28121961]

約数ペア:

[(1, 28121961), (3, 9373987), (7, 4017423), (17, 1654233), (21, 1339141), (37, 760053), (51, 551411), (111, 253351), (119, 236319), (259, 108579), (357, 78773), (629, 44709), (777, 36193), (1887, 14903), (2129, 13209), (4403, 6387)]