20744199

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{2767}}^1$

素因数の和:2804

約数の個数: 36

約数和(自身を含む): 36919584

約数和(自身を除く): 16175385

約数列:

[1, 3, 7, 9, 17, 21, 49, 51, 63, 119, 147, 153, 357, 441, 833, 1071, 2499, 2767, 7497, 8301, 19369, 24903, 47039, 58107, 135583, 141117, 174321, 329273, 406749, 423351, 987819, 1220247, 2304911, 2963457, 6914733, 20744199]

約数ペア:

[(1, 20744199), (3, 6914733), (7, 2963457), (9, 2304911), (17, 1220247), (21, 987819), (49, 423351), (51, 406749), (63, 329273), (119, 174321), (147, 141117), (153, 135583), (357, 58107), (441, 47039), (833, 24903), (1071, 19369), (2499, 8301), (2767, 7497)]