19875185

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{11657}}^1$

素因数の和:11704

約数の個数: 16

約数和(自身を含む): 26860032

約数和(自身を除く): 6984847

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 11657, 58285, 128227, 361367, 641135, 1806835, 3975037, 19875185]

約数ペア:

[(1, 19875185), (5, 3975037), (11, 1806835), (31, 641135), (55, 361367), (155, 128227), (341, 58285), (1705, 11657)]