28008687

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{563}}^1$

素因数の和:699

約数の個数: 32

約数和(自身を含む): 45047808

約数和(自身を除く): 17039121

約数列:

[1, 3, 7, 21, 23, 69, 103, 161, 309, 483, 563, 721, 1689, 2163, 2369, 3941, 7107, 11823, 12949, 16583, 38847, 49749, 57989, 90643, 173967, 271929, 405923, 1217769, 1333747, 4001241, 9336229, 28008687]

約数ペア:

[(1, 28008687), (3, 9336229), (7, 4001241), (21, 1333747), (23, 1217769), (69, 405923), (103, 271929), (161, 173967), (309, 90643), (483, 57989), (563, 49749), (721, 38847), (1689, 16583), (2163, 12949), (2369, 11823), (3941, 7107)]