20928495

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{5387}}^1$

素因数の和:5439

約数の個数: 32

約数和(自身を含む): 39310848

約数和(自身を除く): 18382353

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 105, 111, 185, 259, 555, 777, 1295, 3885, 5387, 16161, 26935, 37709, 80805, 113127, 188545, 199319, 565635, 597957, 996595, 1395233, 2989785, 4185699, 6976165, 20928495]

約数ペア:

[(1, 20928495), (3, 6976165), (5, 4185699), (7, 2989785), (15, 1395233), (21, 996595), (35, 597957), (37, 565635), (105, 199319), (111, 188545), (185, 113127), (259, 80805), (555, 37709), (777, 26935), (1295, 16161), (3885, 5387)]