21129605

素因数分解:

$5^1\times 7^1\times {\mathrm{233}}^1\times {\mathrm{2591}}^1$

素因数の和:2836

約数の個数: 16

約数和(自身を含む): 29113344

約数和(自身を除く): 7983739

約数列:

[1, 5, 7, 35, 233, 1165, 1631, 2591, 8155, 12955, 18137, 90685, 603703, 3018515, 4225921, 21129605]

約数ペア:

[(1, 21129605), (5, 4225921), (7, 3018515), (35, 603703), (233, 90685), (1165, 18137), (1631, 12955), (2591, 8155)]