20819135

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{7901}}^1$

素因数の和:7954

約数の個数: 16

約数和(自身を含む): 27309312

約数和(自身を除く): 6490177

約数列:

[1, 5, 17, 31, 85, 155, 527, 2635, 7901, 39505, 134317, 244931, 671585, 1224655, 4163827, 20819135]

約数ペア:

[(1, 20819135), (5, 4163827), (17, 1224655), (31, 671585), (85, 244931), (155, 134317), (527, 39505), (2635, 7901)]