21741153

素因数分解:

$3^1\times 7^2\times {\mathrm{131}}^1\times {\mathrm{1129}}^1$

素因数の和:1277

約数の個数: 24

約数和(自身を含む): 34008480

約数和(自身を除く): 12267327

約数列:

[1, 3, 7, 21, 49, 131, 147, 393, 917, 1129, 2751, 3387, 6419, 7903, 19257, 23709, 55321, 147899, 165963, 443697, 1035293, 3105879, 7247051, 21741153]

約数ペア:

[(1, 21741153), (3, 7247051), (7, 3105879), (21, 1035293), (49, 443697), (131, 165963), (147, 147899), (393, 55321), (917, 23709), (1129, 19257), (2751, 7903), (3387, 6419)]