20309373

素因数分解:

$3^4\times 7^3\times {\mathrm{17}}^1\times {\mathrm{43}}^1$

素因数の和:93

約数の個数: 80

約数和(自身を含む): 38332800

約数和(自身を除く): 18023427

約数列:

[1, 3, 7, 9, 17, 21, 27, 43, 49, 51, 63, 81, 119, 129, 147, 153, 189, 301, 343, 357, 387, 441, 459, 567, 731, 833, 903, 1029, 1071, 1161, 1323, 1377, 2107, 2193, 2499, 2709, 3087, 3213, 3483, 3969, 5117, 5831, 6321, 6579, 7497, 8127, 9261, 9639, 14749, 15351, 17493, 18963, 19737, 22491, 24381, 27783, 35819, 44247, 46053, 52479, 56889, 59211, 67473, 107457, 132741, 138159, 157437, 170667, 250733, 322371, 398223, 414477, 472311, 752199, 967113, 1194669, 2256597, 2901339, 6769791, 20309373]

約数ペア:

[(1, 20309373), (3, 6769791), (7, 2901339), (9, 2256597), (17, 1194669), (21, 967113), (27, 752199), (43, 472311), (49, 414477), (51, 398223), (63, 322371), (81, 250733), (119, 170667), (129, 157437), (147, 138159), (153, 132741), (189, 107457), (301, 67473), (343, 59211), (357, 56889), (387, 52479), (441, 46053), (459, 44247), (567, 35819), (731, 27783), (833, 24381), (903, 22491), (1029, 19737), (1071, 18963), (1161, 17493), (1323, 15351), (1377, 14749), (2107, 9639), (2193, 9261), (2499, 8127), (2709, 7497), (3087, 6579), (3213, 6321), (3483, 5831), (3969, 5117)]