81551225

素因数分解:

$5^2\times 7^1\times {\mathrm{641}}^1\times {\mathrm{727}}^1$

素因数の和:1385

約数の個数: 24

約数和(自身を含む): 115909248

約数和(自身を除く): 34358023

約数列:

[1, 5, 7, 25, 35, 175, 641, 727, 3205, 3635, 4487, 5089, 16025, 18175, 22435, 25445, 112175, 127225, 466007, 2330035, 3262049, 11650175, 16310245, 81551225]

約数ペア:

[(1, 81551225), (5, 16310245), (7, 11650175), (25, 3262049), (35, 2330035), (175, 466007), (641, 127225), (727, 112175), (3205, 25445), (3635, 22435), (4487, 18175), (5089, 16025)]