21231153

素因数分解:

$3^5\times {\mathrm{41}}^1\times {\mathrm{2131}}^1$

素因数の和:2187

約数の個数: 24

約数和(自身を含む): 32594016

約数和(自身を除く): 11362863

約数列:

[1, 3, 9, 27, 41, 81, 123, 243, 369, 1107, 2131, 3321, 6393, 9963, 19179, 57537, 87371, 172611, 262113, 517833, 786339, 2359017, 7077051, 21231153]

約数ペア:

[(1, 21231153), (3, 7077051), (9, 2359017), (27, 786339), (41, 517833), (81, 262113), (123, 172611), (243, 87371), (369, 57537), (1107, 19179), (2131, 9963), (3321, 6393)]