19828964

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{159911}}^1$

素因数の和:159946

約数の個数: 12

約数和(自身を含む): 35820288

約数和(自身を除く): 15991324

約数列:

[1, 2, 4, 31, 62, 124, 159911, 319822, 639644, 4957241, 9914482, 19828964]

約数ペア:

[(1, 19828964), (2, 9914482), (4, 4957241), (31, 639644), (62, 319822), (124, 159911)]