21413931

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1$

素因数の和:105

約数の個数: 96

約数和(自身を含む): 41368320

約数和(自身を除く): 19954389

約数列:

[1, 3, 7, 11, 17, 19, 21, 33, 41, 49, 51, 57, 77, 119, 123, 133, 147, 187, 209, 231, 287, 323, 357, 399, 451, 539, 561, 627, 697, 779, 833, 861, 931, 969, 1309, 1353, 1463, 1617, 2009, 2091, 2261, 2337, 2499, 2793, 3157, 3553, 3927, 4389, 4879, 5453, 6027, 6783, 7667, 8569, 9163, 9471, 10241, 10659, 13243, 14637, 15827, 16359, 22099, 23001, 24871, 25707, 27489, 30723, 34153, 38171, 39729, 47481, 53669, 59983, 66297, 74613, 92701, 102459, 114513, 145673, 161007, 174097, 179949, 278103, 375683, 419881, 437019, 522291, 648907, 1019711, 1127049, 1259643, 1946721, 3059133, 7137977, 21413931]

約数ペア:

[(1, 21413931), (3, 7137977), (7, 3059133), (11, 1946721), (17, 1259643), (19, 1127049), (21, 1019711), (33, 648907), (41, 522291), (49, 437019), (51, 419881), (57, 375683), (77, 278103), (119, 179949), (123, 174097), (133, 161007), (147, 145673), (187, 114513), (209, 102459), (231, 92701), (287, 74613), (323, 66297), (357, 59983), (399, 53669), (451, 47481), (539, 39729), (561, 38171), (627, 34153), (697, 30723), (779, 27489), (833, 25707), (861, 24871), (931, 23001), (969, 22099), (1309, 16359), (1353, 15827), (1463, 14637), (1617, 13243), (2009, 10659), (2091, 10241), (2261, 9471), (2337, 9163), (2499, 8569), (2793, 7667), (3157, 6783), (3553, 6027), (3927, 5453), (4389, 4879)]