20519416

素因数分解:

$2^3\times {\mathrm{643}}^1\times {\mathrm{3989}}^1$

素因数の和:4638

約数の個数: 16

約数和(自身を含む): 38543400

約数和(自身を除く): 18023984

約数列:

[1, 2, 4, 8, 643, 1286, 2572, 3989, 5144, 7978, 15956, 31912, 2564927, 5129854, 10259708, 20519416]

約数ペア:

[(1, 20519416), (2, 10259708), (4, 5129854), (8, 2564927), (643, 31912), (1286, 15956), (2572, 7978), (3989, 5144)]