18738025

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{181}}^1$

素因数の和:333

約数の個数: 24

約数和(自身を含む): 24170328

約数和(自身を除く): 5432303

約数列:

[1, 5, 25, 41, 101, 181, 205, 505, 905, 1025, 2525, 4141, 4525, 7421, 18281, 20705, 37105, 91405, 103525, 185525, 457025, 749521, 3747605, 18738025]

約数ペア:

[(1, 18738025), (5, 3747605), (25, 749521), (41, 457025), (101, 185525), (181, 103525), (205, 91405), (505, 37105), (905, 20705), (1025, 18281), (2525, 7421), (4141, 4525)]