28387569

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{607}}^1$

素因数の和:765

約数の個数: 32

約数和(自身を含む): 46227456

約数和(自身を除く): 17839887

約数列:

[1, 3, 7, 17, 21, 51, 119, 131, 357, 393, 607, 917, 1821, 2227, 2751, 4249, 6681, 10319, 12747, 15589, 30957, 46767, 72233, 79517, 216699, 238551, 556619, 1351789, 1669857, 4055367, 9462523, 28387569]

約数ペア:

[(1, 28387569), (3, 9462523), (7, 4055367), (17, 1669857), (21, 1351789), (51, 556619), (119, 238551), (131, 216699), (357, 79517), (393, 72233), (607, 46767), (917, 30957), (1821, 15589), (2227, 12747), (2751, 10319), (4249, 6681)]