18705219

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{317}}^1$

素因数の和:439

約数の個数: 32

約数和(自身を含む): 28848960

約数和(自身を除く): 10143741

約数列:

[1, 3, 13, 17, 39, 51, 89, 221, 267, 317, 663, 951, 1157, 1513, 3471, 4121, 4539, 5389, 12363, 16167, 19669, 28213, 59007, 70057, 84639, 210171, 366769, 479621, 1100307, 1438863, 6235073, 18705219]

約数ペア:

[(1, 18705219), (3, 6235073), (13, 1438863), (17, 1100307), (39, 479621), (51, 366769), (89, 210171), (221, 84639), (267, 70057), (317, 59007), (663, 28213), (951, 19669), (1157, 16167), (1513, 12363), (3471, 5389), (4121, 4539)]