20115249

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^2$

素因数の和:158

約数の個数: 48

約数和(自身を含む): 35180544

約数和(自身を除く): 15065295

約数列:

[1, 3, 7, 11, 21, 31, 33, 53, 77, 93, 159, 217, 231, 341, 371, 583, 651, 1023, 1113, 1643, 1749, 2387, 2809, 4081, 4929, 7161, 8427, 11501, 12243, 18073, 19663, 30899, 34503, 54219, 58989, 87079, 92697, 126511, 216293, 261237, 379533, 609553, 648879, 957869, 1828659, 2873607, 6705083, 20115249]

約数ペア:

[(1, 20115249), (3, 6705083), (7, 2873607), (11, 1828659), (21, 957869), (31, 648879), (33, 609553), (53, 379533), (77, 261237), (93, 216293), (159, 126511), (217, 92697), (231, 87079), (341, 58989), (371, 54219), (583, 34503), (651, 30899), (1023, 19663), (1113, 18073), (1643, 12243), (1749, 11501), (2387, 8427), (2809, 7161), (4081, 4929)]