201027025

素因数分解:

$5^2\times {\mathrm{61}}^2\times {\mathrm{2161}}^1$

素因数の和:2293

約数の個数: 18

約数和(自身を含む): 253544226

約数和(自身を除く): 52517201

約数列:

[1, 5, 25, 61, 305, 1525, 2161, 3721, 10805, 18605, 54025, 93025, 131821, 659105, 3295525, 8041081, 40205405, 201027025]

約数ペア:

[(1, 201027025), (5, 40205405), (25, 8041081), (61, 3295525), (305, 659105), (1525, 131821), (2161, 93025), (3721, 54025), (10805, 18605)]