19778463

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{503}}^1$

素因数の和:783

約数の個数: 24

約数和(自身を含む): 30427488

約数和(自身を除く): 10649025

約数列:

[1, 3, 9, 17, 51, 153, 257, 503, 771, 1509, 2313, 4369, 4527, 8551, 13107, 25653, 39321, 76959, 129271, 387813, 1163439, 2197607, 6592821, 19778463]

約数ペア:

[(1, 19778463), (3, 6592821), (9, 2197607), (17, 1163439), (51, 387813), (153, 129271), (257, 76959), (503, 39321), (771, 25653), (1509, 13107), (2313, 8551), (4369, 4527)]