21334257

素因数分解:

$3^2\times 7^3\times {\mathrm{6911}}^1$

素因数の和:6938

約数の個数: 24

約数和(自身を含む): 35942400

約数和(自身を除く): 14608143

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 6911, 20733, 48377, 62199, 145131, 338639, 435393, 1015917, 2370473, 3047751, 7111419, 21334257]

約数ペア:

[(1, 21334257), (3, 7111419), (7, 3047751), (9, 2370473), (21, 1015917), (49, 435393), (63, 338639), (147, 145131), (343, 62199), (441, 48377), (1029, 20733), (3087, 6911)]