20784771

素因数分解:

$3^2\times 7^3\times {\mathrm{6733}}^1$

素因数の和:6760

約数の個数: 24

約数和(自身を含む): 35016800

約数和(自身を除く): 14232029

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 6733, 20199, 47131, 60597, 141393, 329917, 424179, 989751, 2309419, 2969253, 6928257, 20784771]

約数ペア:

[(1, 20784771), (3, 6928257), (7, 2969253), (9, 2309419), (21, 989751), (49, 424179), (63, 329917), (147, 141393), (343, 60597), (441, 47131), (1029, 20199), (3087, 6733)]