20859969

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{431}}^1$

素因数の和:537

約数の個数: 32

約数和(自身を含む): 32223744

約数和(自身を除く): 11363775

約数列:

[1, 3, 13, 17, 39, 51, 73, 219, 221, 431, 663, 949, 1241, 1293, 2847, 3723, 5603, 7327, 16133, 16809, 21981, 31463, 48399, 94389, 95251, 285753, 409019, 534871, 1227057, 1604613, 6953323, 20859969]

約数ペア:

[(1, 20859969), (3, 6953323), (13, 1604613), (17, 1227057), (39, 534871), (51, 409019), (73, 285753), (219, 95251), (221, 94389), (431, 48399), (663, 31463), (949, 21981), (1241, 16809), (1293, 16133), (2847, 7327), (3723, 5603)]