28004501

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^2\times {\mathrm{181}}^1$

素因数の和:273

約数の個数: 24

約数和(自身を含む): 34699392

約数和(自身を除く): 6694891

約数列:

[1, 7, 23, 31, 161, 181, 217, 713, 961, 1267, 4163, 4991, 5611, 6727, 22103, 29141, 39277, 129053, 154721, 173941, 903371, 1217587, 4000643, 28004501]

約数ペア:

[(1, 28004501), (7, 4000643), (23, 1217587), (31, 903371), (161, 173941), (181, 154721), (217, 129053), (713, 39277), (961, 29141), (1267, 22103), (4163, 6727), (4991, 5611)]