21070295428

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{42283}}^1$

素因数の和:42381

約数の個数: 72

約数和(自身を含む): 46642972992

約数和(自身を除く): 25572677564

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 37, 52, 74, 91, 148, 182, 259, 364, 481, 518, 962, 1036, 1369, 1924, 2738, 3367, 5476, 6734, 9583, 13468, 17797, 19166, 35594, 38332, 42283, 71188, 84566, 124579, 169132, 249158, 295981, 498316, 549679, 591962, 1099358, 1183924, 1564471, 2198716, 3128942, 3847753, 6257884, 7695506, 10951297, 15391012, 20338123, 21902594, 40676246, 43805188, 57885427, 81352492, 115770854, 142366861, 231541708, 284733722, 405197989, 569467444, 752510551, 810395978, 1505021102, 1620791956, 3010042204, 5267573857, 10535147714, 21070295428]

約数ペア:

[(1, 21070295428), (2, 10535147714), (4, 5267573857), (7, 3010042204), (13, 1620791956), (14, 1505021102), (26, 810395978), (28, 752510551), (37, 569467444), (52, 405197989), (74, 284733722), (91, 231541708), (148, 142366861), (182, 115770854), (259, 81352492), (364, 57885427), (481, 43805188), (518, 40676246), (962, 21902594), (1036, 20338123), (1369, 15391012), (1924, 10951297), (2738, 7695506), (3367, 6257884), (5476, 3847753), (6734, 3128942), (9583, 2198716), (13468, 1564471), (17797, 1183924), (19166, 1099358), (35594, 591962), (38332, 549679), (42283, 498316), (71188, 295981), (84566, 249158), (124579, 169132)]