80495120

素因数分解:

$2^4\times 5^1\times {\mathrm{1006189}}^1$

素因数の和:1006202

約数の個数: 20

約数和(自身を含む): 187151340

約数和(自身を除く): 106656220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1006189, 2012378, 4024756, 5030945, 8049512, 10061890, 16099024, 20123780, 40247560, 80495120]

約数ペア:

[(1, 80495120), (2, 40247560), (4, 20123780), (5, 16099024), (8, 10061890), (10, 8049512), (16, 5030945), (20, 4024756), (40, 2012378), (80, 1006189)]