18777339

素因数分解:

$3^5\times 7^2\times {\mathrm{19}}^1\times {\mathrm{83}}^1$

素因数の和:131

約数の個数: 72

約数和(自身を含む): 34856640

約数和(自身を除く): 16079301

約数列:

[1, 3, 7, 9, 19, 21, 27, 49, 57, 63, 81, 83, 133, 147, 171, 189, 243, 249, 399, 441, 513, 567, 581, 747, 931, 1197, 1323, 1539, 1577, 1701, 1743, 2241, 2793, 3591, 3969, 4067, 4617, 4731, 5229, 6723, 8379, 10773, 11039, 11907, 12201, 14193, 15687, 20169, 25137, 32319, 33117, 36603, 42579, 47061, 75411, 77273, 99351, 109809, 127737, 141183, 226233, 231819, 298053, 329427, 383211, 695457, 894159, 988281, 2086371, 2682477, 6259113, 18777339]

約数ペア:

[(1, 18777339), (3, 6259113), (7, 2682477), (9, 2086371), (19, 988281), (21, 894159), (27, 695457), (49, 383211), (57, 329427), (63, 298053), (81, 231819), (83, 226233), (133, 141183), (147, 127737), (171, 109809), (189, 99351), (243, 77273), (249, 75411), (399, 47061), (441, 42579), (513, 36603), (567, 33117), (581, 32319), (747, 25137), (931, 20169), (1197, 15687), (1323, 14193), (1539, 12201), (1577, 11907), (1701, 11039), (1743, 10773), (2241, 8379), (2793, 6723), (3591, 5229), (3969, 4731), (4067, 4617)]