20406573

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{619}}^1$

素因数の和:679

約数の個数: 40

約数和(自身を含む): 34209120

約数和(自身を除く): 13802547

約数列:

[1, 3, 9, 11, 27, 33, 37, 81, 99, 111, 297, 333, 407, 619, 891, 999, 1221, 1857, 2997, 3663, 5571, 6809, 10989, 16713, 20427, 22903, 32967, 50139, 61281, 68709, 183843, 206127, 251933, 551529, 618381, 755799, 1855143, 2267397, 6802191, 20406573]

約数ペア:

[(1, 20406573), (3, 6802191), (9, 2267397), (11, 1855143), (27, 755799), (33, 618381), (37, 551529), (81, 251933), (99, 206127), (111, 183843), (297, 68709), (333, 61281), (407, 50139), (619, 32967), (891, 22903), (999, 20427), (1221, 16713), (1857, 10989), (2997, 6809), (3663, 5571)]