19997604

素因数分解:

$2^2\times 3^4\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:239

約数の個数: 120

約数和(自身を含む): 59195136

約数和(自身を除く): 39197532

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 27, 31, 33, 36, 44, 54, 62, 66, 81, 93, 99, 108, 124, 132, 162, 181, 186, 198, 279, 297, 324, 341, 362, 372, 396, 543, 558, 594, 682, 724, 837, 891, 1023, 1086, 1116, 1188, 1364, 1629, 1674, 1782, 1991, 2046, 2172, 2511, 3069, 3258, 3348, 3564, 3982, 4092, 4887, 5022, 5611, 5973, 6138, 6516, 7964, 9207, 9774, 10044, 11222, 11946, 12276, 14661, 16833, 17919, 18414, 19548, 22444, 23892, 27621, 29322, 33666, 35838, 36828, 50499, 53757, 55242, 58644, 61721, 67332, 71676, 100998, 107514, 110484, 123442, 151497, 161271, 185163, 201996, 215028, 246884, 302994, 322542, 370326, 454491, 555489, 605988, 645084, 740652, 908982, 1110978, 1666467, 1817964, 2221956, 3332934, 4999401, 6665868, 9998802, 19997604]

約数ペア:

[(1, 19997604), (2, 9998802), (3, 6665868), (4, 4999401), (6, 3332934), (9, 2221956), (11, 1817964), (12, 1666467), (18, 1110978), (22, 908982), (27, 740652), (31, 645084), (33, 605988), (36, 555489), (44, 454491), (54, 370326), (62, 322542), (66, 302994), (81, 246884), (93, 215028), (99, 201996), (108, 185163), (124, 161271), (132, 151497), (162, 123442), (181, 110484), (186, 107514), (198, 100998), (279, 71676), (297, 67332), (324, 61721), (341, 58644), (362, 55242), (372, 53757), (396, 50499), (543, 36828), (558, 35838), (594, 33666), (682, 29322), (724, 27621), (837, 23892), (891, 22444), (1023, 19548), (1086, 18414), (1116, 17919), (1188, 16833), (1364, 14661), (1629, 12276), (1674, 11946), (1782, 11222), (1991, 10044), (2046, 9774), (2172, 9207), (2511, 7964), (3069, 6516), (3258, 6138), (3348, 5973), (3564, 5611), (3982, 5022), (4092, 4887)]