128844920

素因数分解:

$2^3\times 5^1\times {\mathrm{3221123}}^1$

素因数の和:3221134

約数の個数: 16

約数和(自身を含む): 289901160

約数和(自身を除く): 161056240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3221123, 6442246, 12884492, 16105615, 25768984, 32211230, 64422460, 128844920]

約数ペア:

[(1, 128844920), (2, 64422460), (4, 32211230), (5, 25768984), (8, 16105615), (10, 12884492), (20, 6442246), (40, 3221123)]