20009517

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{643}}^1$

素因数の和:721

約数の個数: 32

約数和(自身を含む): 31159296

約数和(自身を除く): 11149779

約数列:

[1, 3, 11, 23, 33, 41, 69, 123, 253, 451, 643, 759, 943, 1353, 1929, 2829, 7073, 10373, 14789, 21219, 26363, 31119, 44367, 79089, 162679, 289993, 488037, 606349, 869979, 1819047, 6669839, 20009517]

約数ペア:

[(1, 20009517), (3, 6669839), (11, 1819047), (23, 869979), (33, 606349), (41, 488037), (69, 289993), (123, 162679), (253, 79089), (451, 44367), (643, 31119), (759, 26363), (943, 21219), (1353, 14789), (1929, 10373), (2829, 7073)]