81949560

素因数分解:

$2^3\times 3^1\times 5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{181}}^1$

素因数の和:227

約数の個数: 256

約数和(自身を含む): 314496000

約数和(自身を除く): 232546440

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 49, 55, 56, 60, 66, 70, 77, 84, 88, 98, 105, 110, 120, 132, 140, 147, 154, 165, 168, 181, 196, 210, 220, 231, 245, 264, 280, 294, 308, 330, 343, 362, 385, 392, 420, 440, 462, 490, 539, 543, 588, 616, 660, 686, 724, 735, 770, 840, 905, 924, 980, 1029, 1078, 1086, 1155, 1176, 1267, 1320, 1372, 1448, 1470, 1540, 1617, 1715, 1810, 1848, 1960, 1991, 2058, 2156, 2172, 2310, 2534, 2695, 2715, 2744, 2940, 3080, 3234, 3430, 3620, 3773, 3801, 3982, 4116, 4312, 4344, 4620, 5068, 5145, 5390, 5430, 5880, 5973, 6335, 6468, 6860, 7240, 7546, 7602, 7964, 8085, 8232, 8869, 9240, 9955, 10136, 10290, 10780, 10860, 11319, 11946, 12670, 12936, 13720, 13937, 15092, 15204, 15928, 16170, 17738, 18865, 19005, 19910, 20580, 21560, 21720, 22638, 23892, 25340, 26607, 27874, 29865, 30184, 30408, 32340, 35476, 37730, 38010, 39820, 41160, 41811, 44345, 45276, 47784, 50680, 53214, 55748, 56595, 59730, 62083, 64680, 69685, 70952, 75460, 76020, 79640, 83622, 88690, 90552, 97559, 106428, 111496, 113190, 119460, 124166, 133035, 139370, 150920, 152040, 167244, 177380, 186249, 195118, 209055, 212856, 226380, 238920, 248332, 266070, 278740, 292677, 310415, 334488, 354760, 372498, 390236, 418110, 452760, 487795, 496664, 532140, 557480, 585354, 620830, 682913, 744996, 780472, 836220, 931245, 975590, 1064280, 1170708, 1241660, 1365826, 1463385, 1489992, 1672440, 1862490, 1951180, 2048739, 2341416, 2483320, 2731652, 2926770, 3414565, 3724980, 3902360, 4097478, 5463304, 5853540, 6829130, 7449960, 8194956, 10243695, 11707080, 13658260, 16389912, 20487390, 27316520, 40974780, 81949560]

約数ペア:

[(1, 81949560), (2, 40974780), (3, 27316520), (4, 20487390), (5, 16389912), (6, 13658260), (7, 11707080), (8, 10243695), (10, 8194956), (11, 7449960), (12, 6829130), (14, 5853540), (15, 5463304), (20, 4097478), (21, 3902360), (22, 3724980), (24, 3414565), (28, 2926770), (30, 2731652), (33, 2483320), (35, 2341416), (40, 2048739), (42, 1951180), (44, 1862490), (49, 1672440), (55, 1489992), (56, 1463385), (60, 1365826), (66, 1241660), (70, 1170708), (77, 1064280), (84, 975590), (88, 931245), (98, 836220), (105, 780472), (110, 744996), (120, 682913), (132, 620830), (140, 585354), (147, 557480), (154, 532140), (165, 496664), (168, 487795), (181, 452760), (196, 418110), (210, 390236), (220, 372498), (231, 354760), (245, 334488), (264, 310415), (280, 292677), (294, 278740), (308, 266070), (330, 248332), (343, 238920), (362, 226380), (385, 212856), (392, 209055), (420, 195118), (440, 186249), (462, 177380), (490, 167244), (539, 152040), (543, 150920), (588, 139370), (616, 133035), (660, 124166), (686, 119460), (724, 113190), (735, 111496), (770, 106428), (840, 97559), (905, 90552), (924, 88690), (980, 83622), (1029, 79640), (1078, 76020), (1086, 75460), (1155, 70952), (1176, 69685), (1267, 64680), (1320, 62083), (1372, 59730), (1448, 56595), (1470, 55748), (1540, 53214), (1617, 50680), (1715, 47784), (1810, 45276), (1848, 44345), (1960, 41811), (1991, 41160), (2058, 39820), (2156, 38010), (2172, 37730), (2310, 35476), (2534, 32340), (2695, 30408), (2715, 30184), (2744, 29865), (2940, 27874), (3080, 26607), (3234, 25340), (3430, 23892), (3620, 22638), (3773, 21720), (3801, 21560), (3982, 20580), (4116, 19910), (4312, 19005), (4344, 18865), (4620, 17738), (5068, 16170), (5145, 15928), (5390, 15204), (5430, 15092), (5880, 13937), (5973, 13720), (6335, 12936), (6468, 12670), (6860, 11946), (7240, 11319), (7546, 10860), (7602, 10780), (7964, 10290), (8085, 10136), (8232, 9955), (8869, 9240)]