30991233

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1861}}^1$

素因数の和:1945

約数の個数: 32

約数和(自身を含む): 51718912

約数和(自身を除く): 20727679

約数列:

[1, 3, 7, 13, 21, 39, 61, 91, 183, 273, 427, 793, 1281, 1861, 2379, 5551, 5583, 13027, 16653, 24193, 39081, 72579, 113521, 169351, 340563, 508053, 794647, 1475773, 2383941, 4427319, 10330411, 30991233]

約数ペア:

[(1, 30991233), (3, 10330411), (7, 4427319), (13, 2383941), (21, 1475773), (39, 794647), (61, 508053), (91, 340563), (183, 169351), (273, 113521), (427, 72579), (793, 39081), (1281, 24193), (1861, 16653), (2379, 13027), (5551, 5583)]