21073897

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{167}}^1\times {\mathrm{571}}^1$

素因数の和:768

約数の個数: 16

約数和(自身を含む): 24216192

約数和(自身を除く): 3142295

約数列:

[1, 13, 17, 167, 221, 571, 2171, 2839, 7423, 9707, 36907, 95357, 126191, 1239641, 1621069, 21073897]

約数ペア:

[(1, 21073897), (13, 1621069), (17, 1239641), (167, 126191), (221, 95357), (571, 36907), (2171, 9707), (2839, 7423)]