20223999

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{773}}^1$

素因数の和:821

約数の個数: 40

約数和(自身を含む): 33715440

約数和(自身を除く): 13491441

約数列:

[1, 3, 9, 17, 19, 27, 51, 57, 81, 153, 171, 323, 459, 513, 773, 969, 1377, 1539, 2319, 2907, 6957, 8721, 13141, 14687, 20871, 26163, 39423, 44061, 62613, 118269, 132183, 249679, 354807, 396549, 749037, 1064421, 1189647, 2247111, 6741333, 20223999]

約数ペア:

[(1, 20223999), (3, 6741333), (9, 2247111), (17, 1189647), (19, 1064421), (27, 749037), (51, 396549), (57, 354807), (81, 249679), (153, 132183), (171, 118269), (323, 62613), (459, 44061), (513, 39423), (773, 26163), (969, 20871), (1377, 14687), (1539, 13141), (2319, 8721), (2907, 6957)]