20457591

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:212

約数の個数: 48

約数和(自身を含む): 35035392

約数和(自身を除く): 14577801

約数列:

[1, 3, 7, 11, 21, 33, 77, 83, 97, 121, 231, 249, 291, 363, 581, 679, 847, 913, 1067, 1743, 2037, 2541, 2739, 3201, 6391, 7469, 8051, 10043, 11737, 19173, 22407, 24153, 30129, 35211, 56357, 70301, 82159, 88561, 169071, 210903, 246477, 265683, 619927, 974171, 1859781, 2922513, 6819197, 20457591]

約数ペア:

[(1, 20457591), (3, 6819197), (7, 2922513), (11, 1859781), (21, 974171), (33, 619927), (77, 265683), (83, 246477), (97, 210903), (121, 169071), (231, 88561), (249, 82159), (291, 70301), (363, 56357), (581, 35211), (679, 30129), (847, 24153), (913, 22407), (1067, 19173), (1743, 11737), (2037, 10043), (2541, 8051), (2739, 7469), (3201, 6391)]