205171920

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^2$

素因数の和:159

約数の個数: 240

約数和(自身を含む): 738851520

約数和(自身を除く): 533679600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 43, 45, 47, 48, 54, 60, 72, 80, 86, 90, 94, 108, 120, 129, 135, 141, 144, 172, 180, 188, 215, 216, 235, 240, 258, 270, 282, 344, 360, 376, 387, 423, 430, 432, 470, 516, 540, 564, 645, 688, 705, 720, 752, 774, 846, 860, 940, 1032, 1080, 1128, 1161, 1269, 1290, 1410, 1548, 1692, 1720, 1880, 1935, 2021, 2064, 2115, 2160, 2209, 2256, 2322, 2538, 2580, 2820, 3096, 3384, 3440, 3760, 3870, 4042, 4230, 4418, 4644, 5076, 5160, 5640, 5805, 6063, 6192, 6345, 6627, 6768, 7740, 8084, 8460, 8836, 9288, 10105, 10152, 10320, 11045, 11280, 11610, 12126, 12690, 13254, 15480, 16168, 16920, 17672, 18189, 18576, 19881, 20210, 20304, 22090, 23220, 24252, 25380, 26508, 30315, 30960, 32336, 33135, 33840, 35344, 36378, 39762, 40420, 44180, 46440, 48504, 50760, 53016, 54567, 59643, 60630, 66270, 72756, 79524, 80840, 88360, 90945, 92880, 94987, 97008, 99405, 101520, 106032, 109134, 119286, 121260, 132540, 145512, 159048, 161680, 176720, 181890, 189974, 198810, 218268, 238572, 242520, 265080, 272835, 284961, 291024, 298215, 318096, 363780, 379948, 397620, 436536, 474935, 477144, 485040, 530160, 545670, 569922, 596430, 727560, 759896, 795240, 854883, 873072, 949870, 954288, 1091340, 1139844, 1192860, 1424805, 1455120, 1519792, 1590480, 1709766, 1899740, 2182680, 2279688, 2385720, 2564649, 2849610, 3419532, 3799480, 4274415, 4365360, 4559376, 4771440, 5129298, 5699220, 6839064, 7598960, 8548830, 10258596, 11398440, 12823245, 13678128, 17097660, 20517192, 22796880, 25646490, 34195320, 41034384, 51292980, 68390640, 102585960, 205171920]

約数ペア:

[(1, 205171920), (2, 102585960), (3, 68390640), (4, 51292980), (5, 41034384), (6, 34195320), (8, 25646490), (9, 22796880), (10, 20517192), (12, 17097660), (15, 13678128), (16, 12823245), (18, 11398440), (20, 10258596), (24, 8548830), (27, 7598960), (30, 6839064), (36, 5699220), (40, 5129298), (43, 4771440), (45, 4559376), (47, 4365360), (48, 4274415), (54, 3799480), (60, 3419532), (72, 2849610), (80, 2564649), (86, 2385720), (90, 2279688), (94, 2182680), (108, 1899740), (120, 1709766), (129, 1590480), (135, 1519792), (141, 1455120), (144, 1424805), (172, 1192860), (180, 1139844), (188, 1091340), (215, 954288), (216, 949870), (235, 873072), (240, 854883), (258, 795240), (270, 759896), (282, 727560), (344, 596430), (360, 569922), (376, 545670), (387, 530160), (423, 485040), (430, 477144), (432, 474935), (470, 436536), (516, 397620), (540, 379948), (564, 363780), (645, 318096), (688, 298215), (705, 291024), (720, 284961), (752, 272835), (774, 265080), (846, 242520), (860, 238572), (940, 218268), (1032, 198810), (1080, 189974), (1128, 181890), (1161, 176720), (1269, 161680), (1290, 159048), (1410, 145512), (1548, 132540), (1692, 121260), (1720, 119286), (1880, 109134), (1935, 106032), (2021, 101520), (2064, 99405), (2115, 97008), (2160, 94987), (2209, 92880), (2256, 90945), (2322, 88360), (2538, 80840), (2580, 79524), (2820, 72756), (3096, 66270), (3384, 60630), (3440, 59643), (3760, 54567), (3870, 53016), (4042, 50760), (4230, 48504), (4418, 46440), (4644, 44180), (5076, 40420), (5160, 39762), (5640, 36378), (5805, 35344), (6063, 33840), (6192, 33135), (6345, 32336), (6627, 30960), (6768, 30315), (7740, 26508), (8084, 25380), (8460, 24252), (8836, 23220), (9288, 22090), (10105, 20304), (10152, 20210), (10320, 19881), (11045, 18576), (11280, 18189), (11610, 17672), (12126, 16920), (12690, 16168), (13254, 15480)]