21690591

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{457}}^1\times {\mathrm{1217}}^1$

素因数の和:1690

約数の個数: 16

約数和(自身を含む): 31239264

約数和(自身を除く): 9548673

約数列:

[1, 3, 13, 39, 457, 1217, 1371, 3651, 5941, 15821, 17823, 47463, 556169, 1668507, 7230197, 21690591]

約数ペア:

[(1, 21690591), (3, 7230197), (13, 1668507), (39, 556169), (457, 47463), (1217, 17823), (1371, 15821), (3651, 5941)]