21333669

素因数分解:

$3^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{1409}}^1$

素因数の和:1529

約数の個数: 24

約数和(自身を含む): 33433920

約数和(自身を除く): 12100251

約数列:

[1, 3, 7, 21, 49, 103, 147, 309, 721, 1409, 2163, 4227, 5047, 9863, 15141, 29589, 69041, 145127, 207123, 435381, 1015889, 3047667, 7111223, 21333669]

約数ペア:

[(1, 21333669), (3, 7111223), (7, 3047667), (21, 1015889), (49, 435381), (103, 207123), (147, 145127), (309, 69041), (721, 29589), (1409, 15141), (2163, 9863), (4227, 5047)]