28718781

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{1783}}^1$

素因数の和:1865

約数の個数: 32

約数和(自身を含む): 47953920

約数和(自身を除く): 19235139

約数列:

[1, 3, 7, 13, 21, 39, 59, 91, 177, 273, 413, 767, 1239, 1783, 2301, 5349, 5369, 12481, 16107, 23179, 37443, 69537, 105197, 162253, 315591, 486759, 736379, 1367561, 2209137, 4102683, 9572927, 28718781]

約数ペア:

[(1, 28718781), (3, 9572927), (7, 4102683), (13, 2209137), (21, 1367561), (39, 736379), (59, 486759), (91, 315591), (177, 162253), (273, 105197), (413, 69537), (767, 37443), (1239, 23179), (1783, 16107), (2301, 12481), (5349, 5369)]