20385771

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{3359}}^1$

素因数の和:3403

約数の個数: 24

約数和(自身を含む): 33008640

約数和(自身を除く): 12622869

約数列:

[1, 3, 7, 17, 21, 51, 119, 289, 357, 867, 2023, 3359, 6069, 10077, 23513, 57103, 70539, 171309, 399721, 970751, 1199163, 2912253, 6795257, 20385771]

約数ペア:

[(1, 20385771), (3, 6795257), (7, 2912253), (17, 1199163), (21, 970751), (51, 399721), (119, 171309), (289, 70539), (357, 57103), (867, 23513), (2023, 10077), (3359, 6069)]