261013428

素因数分解:

$2^2\times 3^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1999}}^1$

素因数の和:2059

約数の個数: 120

約数和(自身を含む): 758912000

約数和(自身を除く): 497898572

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 31, 36, 39, 52, 54, 62, 78, 81, 93, 108, 117, 124, 156, 162, 186, 234, 279, 324, 351, 372, 403, 468, 558, 702, 806, 837, 1053, 1116, 1209, 1404, 1612, 1674, 1999, 2106, 2418, 2511, 3348, 3627, 3998, 4212, 4836, 5022, 5997, 7254, 7996, 10044, 10881, 11994, 14508, 17991, 21762, 23988, 25987, 32643, 35982, 43524, 51974, 53973, 61969, 65286, 71964, 77961, 103948, 107946, 123938, 130572, 155922, 161919, 185907, 215892, 233883, 247876, 311844, 323838, 371814, 467766, 557721, 647676, 701649, 743628, 805597, 935532, 1115442, 1403298, 1611194, 1673163, 2104947, 2230884, 2416791, 2806596, 3222388, 3346326, 4209894, 4833582, 5019489, 6692652, 7250373, 8419788, 9667164, 10038978, 14500746, 20077956, 21751119, 29001492, 43502238, 65253357, 87004476, 130506714, 261013428]

約数ペア:

[(1, 261013428), (2, 130506714), (3, 87004476), (4, 65253357), (6, 43502238), (9, 29001492), (12, 21751119), (13, 20077956), (18, 14500746), (26, 10038978), (27, 9667164), (31, 8419788), (36, 7250373), (39, 6692652), (52, 5019489), (54, 4833582), (62, 4209894), (78, 3346326), (81, 3222388), (93, 2806596), (108, 2416791), (117, 2230884), (124, 2104947), (156, 1673163), (162, 1611194), (186, 1403298), (234, 1115442), (279, 935532), (324, 805597), (351, 743628), (372, 701649), (403, 647676), (468, 557721), (558, 467766), (702, 371814), (806, 323838), (837, 311844), (1053, 247876), (1116, 233883), (1209, 215892), (1404, 185907), (1612, 161919), (1674, 155922), (1999, 130572), (2106, 123938), (2418, 107946), (2511, 103948), (3348, 77961), (3627, 71964), (3998, 65286), (4212, 61969), (4836, 53973), (5022, 51974), (5997, 43524), (7254, 35982), (7996, 32643), (10044, 25987), (10881, 23988), (11994, 21762), (14508, 17991)]