20268573

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1609}}^1$

素因数の和:1661

約数の個数: 32

約数和(自身を含む): 32457600

約数和(自身を除く): 12189027

約数列:

[1, 3, 13, 17, 19, 39, 51, 57, 221, 247, 323, 663, 741, 969, 1609, 4199, 4827, 12597, 20917, 27353, 30571, 62751, 82059, 91713, 355589, 397423, 519707, 1066767, 1192269, 1559121, 6756191, 20268573]

約数ペア:

[(1, 20268573), (3, 6756191), (13, 1559121), (17, 1192269), (19, 1066767), (39, 519707), (51, 397423), (57, 355589), (221, 91713), (247, 82059), (323, 62751), (663, 30571), (741, 27353), (969, 20917), (1609, 12597), (4199, 4827)]