80122540

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{10091}}^1$

素因数の和:10497

約数の個数: 24

約数和(自身を含む): 168697872

約数和(自身を除く): 88575332

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 10091, 20182, 40364, 50455, 100910, 201820, 4006127, 8012254, 16024508, 20030635, 40061270, 80122540]

約数ペア:

[(1, 80122540), (2, 40061270), (4, 20030635), (5, 16024508), (10, 8012254), (20, 4006127), (397, 201820), (794, 100910), (1588, 50455), (1985, 40364), (3970, 20182), (7940, 10091)]