28260141

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1697}}^1$

素因数の和:1781

約数の個数: 32

約数和(自身を含む): 47163648

約数和(自身を除く): 18903507

約数列:

[1, 3, 7, 13, 21, 39, 61, 91, 183, 273, 427, 793, 1281, 1697, 2379, 5091, 5551, 11879, 16653, 22061, 35637, 66183, 103517, 154427, 310551, 463281, 724619, 1345721, 2173857, 4037163, 9420047, 28260141]

約数ペア:

[(1, 28260141), (3, 9420047), (7, 4037163), (13, 2173857), (21, 1345721), (39, 724619), (61, 463281), (91, 310551), (183, 154427), (273, 103517), (427, 66183), (793, 35637), (1281, 22061), (1697, 16653), (2379, 11879), (5091, 5551)]