19513143

素因数分解:

$3^6\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:131

約数の個数: 56

約数和(自身を含む): 33052320

約数和(自身を除く): 13539177

約数列:

[1, 3, 9, 13, 27, 29, 39, 71, 81, 87, 117, 213, 243, 261, 351, 377, 639, 729, 783, 923, 1053, 1131, 1917, 2059, 2349, 2769, 3159, 3393, 5751, 6177, 7047, 8307, 9477, 10179, 17253, 18531, 21141, 24921, 26767, 30537, 51759, 55593, 74763, 80301, 91611, 166779, 224289, 240903, 274833, 500337, 672867, 722709, 1501011, 2168127, 6504381, 19513143]

約数ペア:

[(1, 19513143), (3, 6504381), (9, 2168127), (13, 1501011), (27, 722709), (29, 672867), (39, 500337), (71, 274833), (81, 240903), (87, 224289), (117, 166779), (213, 91611), (243, 80301), (261, 74763), (351, 55593), (377, 51759), (639, 30537), (729, 26767), (783, 24921), (923, 21141), (1053, 18531), (1131, 17253), (1917, 10179), (2059, 9477), (2349, 8307), (2769, 7047), (3159, 6177), (3393, 5751)]