20404945

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^2\times {\mathrm{271}}^1$

素因数の和:361

約数の個数: 24

約数和(自身を含む): 27554688

約数和(自身を除く): 7149743

約数列:

[1, 5, 11, 37, 55, 185, 271, 407, 1355, 1369, 2035, 2981, 6845, 10027, 14905, 15059, 50135, 75295, 110297, 370999, 551485, 1854995, 4080989, 20404945]

約数ペア:

[(1, 20404945), (5, 4080989), (11, 1854995), (37, 551485), (55, 370999), (185, 110297), (271, 75295), (407, 50135), (1355, 15059), (1369, 14905), (2035, 10027), (2981, 6845)]