80998100

素因数分解:

$2^2\times 5^2\times {\mathrm{809981}}^1$

素因数の和:809995

約数の個数: 18

約数和(自身を含む): 175766094

約数和(自身を除く): 94767994

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 809981, 1619962, 3239924, 4049905, 8099810, 16199620, 20249525, 40499050, 80998100]

約数ペア:

[(1, 80998100), (2, 40499050), (4, 20249525), (5, 16199620), (10, 8099810), (20, 4049905), (25, 3239924), (50, 1619962), (100, 809981)]