19929745

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{11689}}^1$

素因数の和:11736

約数の個数: 16

約数和(自身を含む): 26933760

約数和(自身を除く): 7004015

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 11689, 58445, 128579, 362359, 642895, 1811795, 3985949, 19929745]

約数ペア:

[(1, 19929745), (5, 3985949), (11, 1811795), (31, 642895), (55, 362359), (155, 128579), (341, 58445), (1705, 11689)]