30991023

素因数分解:

$3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{3539}}^1$

素因数の和:3691

約数の個数: 24

約数和(自身を含む): 51542400

約数和(自身を除く): 20551377

約数列:

[1, 3, 7, 9, 21, 63, 139, 417, 973, 1251, 2919, 3539, 8757, 10617, 24773, 31851, 74319, 222957, 491921, 1475763, 3443447, 4427289, 10330341, 30991023]

約数ペア:

[(1, 30991023), (3, 10330341), (7, 4427289), (9, 3443447), (21, 1475763), (63, 491921), (139, 222957), (417, 74319), (973, 31851), (1251, 24773), (2919, 10617), (3539, 8757)]