21092589

素因数分解:

$3^3\times 7^2\times {\mathrm{107}}^1\times {\mathrm{149}}^1$

素因数の和:279

約数の個数: 48

約数和(自身を含む): 36936000

約数和(自身を除く): 15843411

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 107, 147, 149, 189, 321, 441, 447, 749, 963, 1043, 1323, 1341, 2247, 2889, 3129, 4023, 5243, 6741, 7301, 9387, 15729, 15943, 20223, 21903, 28161, 47187, 47829, 65709, 111601, 141561, 143487, 197127, 334803, 430461, 781207, 1004409, 2343621, 3013227, 7030863, 21092589]

約数ペア:

[(1, 21092589), (3, 7030863), (7, 3013227), (9, 2343621), (21, 1004409), (27, 781207), (49, 430461), (63, 334803), (107, 197127), (147, 143487), (149, 141561), (189, 111601), (321, 65709), (441, 47829), (447, 47187), (749, 28161), (963, 21903), (1043, 20223), (1323, 15943), (1341, 15729), (2247, 9387), (2889, 7301), (3129, 6741), (4023, 5243)]