21780471

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{7699}}^1$

素因数の和:7766

約数の個数: 16

約数和(自身を含む): 31046400

約数和(自身を除く): 9265929

約数列:

[1, 3, 23, 41, 69, 123, 943, 2829, 7699, 23097, 177077, 315659, 531231, 946977, 7260157, 21780471]

約数ペア:

[(1, 21780471), (3, 7260157), (23, 946977), (41, 531231), (69, 315659), (123, 177077), (943, 23097), (2829, 7699)]