21000295683

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{349}}^1$

素因数の和:522

約数の個数: 128

約数和(自身を含む): 34728960000

約数和(自身を除く): 13728664317

約数列:

[1, 3, 9, 27, 29, 31, 37, 67, 87, 93, 111, 201, 261, 279, 333, 349, 603, 783, 837, 899, 999, 1047, 1073, 1147, 1809, 1943, 2077, 2479, 2697, 3141, 3219, 3441, 5829, 6231, 7437, 8091, 9423, 9657, 10121, 10323, 10819, 12913, 17487, 18693, 22311, 23383, 24273, 28971, 30363, 30969, 32457, 33263, 38739, 52461, 56079, 60233, 66933, 70149, 71891, 76849, 91089, 97371, 99789, 116217, 180699, 210447, 215673, 230547, 273267, 292113, 299367, 313751, 348651, 374477, 400303, 542097, 631341, 647019, 678107, 691641, 724873, 865171, 898101, 941253, 1123431, 1200909, 1626291, 1941057, 2034321, 2074923, 2174619, 2228621, 2595513, 2823759, 3370293, 3602727, 6102963, 6523857, 6685863, 7786539, 8471277, 10110879, 10808181, 11608787, 18308889, 19571571, 20057589, 21021317, 23359617, 25089959, 26820301, 34826361, 60172767, 63063951, 75269877, 80460903, 104479083, 189191853, 225809631, 241382709, 313437249, 567575559, 677428893, 724148127, 777788729, 2333366187, 7000098561, 21000295683]

約数ペア:

[(1, 21000295683), (3, 7000098561), (9, 2333366187), (27, 777788729), (29, 724148127), (31, 677428893), (37, 567575559), (67, 313437249), (87, 241382709), (93, 225809631), (111, 189191853), (201, 104479083), (261, 80460903), (279, 75269877), (333, 63063951), (349, 60172767), (603, 34826361), (783, 26820301), (837, 25089959), (899, 23359617), (999, 21021317), (1047, 20057589), (1073, 19571571), (1147, 18308889), (1809, 11608787), (1943, 10808181), (2077, 10110879), (2479, 8471277), (2697, 7786539), (3141, 6685863), (3219, 6523857), (3441, 6102963), (5829, 3602727), (6231, 3370293), (7437, 2823759), (8091, 2595513), (9423, 2228621), (9657, 2174619), (10121, 2074923), (10323, 2034321), (10819, 1941057), (12913, 1626291), (17487, 1200909), (18693, 1123431), (22311, 941253), (23383, 898101), (24273, 865171), (28971, 724873), (30363, 691641), (30969, 678107), (32457, 647019), (33263, 631341), (38739, 542097), (52461, 400303), (56079, 374477), (60233, 348651), (66933, 313751), (70149, 299367), (71891, 292113), (76849, 273267), (91089, 230547), (97371, 215673), (99789, 210447), (116217, 180699)]