27805725

素因数分解:

$3^2\times 5^2\times {\mathrm{123581}}^1$

素因数の和:123597

約数の個数: 18

約数和(自身を含む): 49803546

約数和(自身を除く): 21997821

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 123581, 370743, 617905, 1112229, 1853715, 3089525, 5561145, 9268575, 27805725]

約数ペア:

[(1, 27805725), (3, 9268575), (5, 5561145), (9, 3089525), (15, 1853715), (25, 1112229), (45, 617905), (75, 370743), (225, 123581)]