28210719

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{3121}}^1$

素因数の和:3278

約数の個数: 16

約数和(自身を含む): 39561984

約数和(自身を除く): 11351265

約数列:

[1, 3, 23, 69, 131, 393, 3013, 3121, 9039, 9363, 71783, 215349, 408851, 1226553, 9403573, 28210719]

約数ペア:

[(1, 28210719), (3, 9403573), (23, 1226553), (69, 408851), (131, 215349), (393, 71783), (3013, 9363), (3121, 9039)]