25731909

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1$

素因数の和:159

約数の個数: 72

約数和(自身を含む): 47305440

約数和(自身を除く): 21573531

約数列:

[1, 3, 7, 9, 19, 21, 37, 49, 57, 63, 83, 111, 133, 147, 171, 249, 259, 333, 399, 441, 581, 703, 747, 777, 931, 1197, 1577, 1743, 1813, 2109, 2331, 2793, 3071, 4067, 4731, 4921, 5229, 5439, 6327, 8379, 9213, 11039, 12201, 14193, 14763, 16317, 21497, 27639, 33117, 34447, 36603, 44289, 58349, 64491, 77273, 99351, 103341, 150479, 175047, 193473, 231819, 310023, 408443, 451437, 525141, 695457, 1225329, 1354311, 2859101, 3675987, 8577303, 25731909]

約数ペア:

[(1, 25731909), (3, 8577303), (7, 3675987), (9, 2859101), (19, 1354311), (21, 1225329), (37, 695457), (49, 525141), (57, 451437), (63, 408443), (83, 310023), (111, 231819), (133, 193473), (147, 175047), (171, 150479), (249, 103341), (259, 99351), (333, 77273), (399, 64491), (441, 58349), (581, 44289), (703, 36603), (747, 34447), (777, 33117), (931, 27639), (1197, 21497), (1577, 16317), (1743, 14763), (1813, 14193), (2109, 12201), (2331, 11039), (2793, 9213), (3071, 8379), (4067, 6327), (4731, 5439), (4921, 5229)]