21271320

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{367}}^1$

素因数の和:414

約数の個数: 192

約数和(自身を含む): 82667520

約数和(自身を除く): 61396200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 23, 24, 28, 30, 35, 36, 40, 42, 45, 46, 56, 60, 63, 69, 70, 72, 84, 90, 92, 105, 115, 120, 126, 138, 140, 161, 168, 180, 184, 207, 210, 230, 252, 276, 280, 315, 322, 345, 360, 367, 414, 420, 460, 483, 504, 552, 630, 644, 690, 734, 805, 828, 840, 920, 966, 1035, 1101, 1260, 1288, 1380, 1449, 1468, 1610, 1656, 1835, 1932, 2070, 2202, 2415, 2520, 2569, 2760, 2898, 2936, 3220, 3303, 3670, 3864, 4140, 4404, 4830, 5138, 5505, 5796, 6440, 6606, 7245, 7340, 7707, 8280, 8441, 8808, 9660, 10276, 11010, 11592, 12845, 13212, 14490, 14680, 15414, 16515, 16882, 19320, 20552, 22020, 23121, 25323, 25690, 26424, 28980, 30828, 33030, 33764, 38535, 42205, 44040, 46242, 50646, 51380, 57960, 59087, 61656, 66060, 67528, 75969, 77070, 84410, 92484, 101292, 102760, 115605, 118174, 126615, 132120, 151938, 154140, 168820, 177261, 184968, 202584, 231210, 236348, 253230, 295435, 303876, 308280, 337640, 354522, 379845, 462420, 472696, 506460, 531783, 590870, 607752, 709044, 759690, 886305, 924840, 1012920, 1063566, 1181740, 1418088, 1519380, 1772610, 2127132, 2363480, 2658915, 3038760, 3545220, 4254264, 5317830, 7090440, 10635660, 21271320]

約数ペア:

[(1, 21271320), (2, 10635660), (3, 7090440), (4, 5317830), (5, 4254264), (6, 3545220), (7, 3038760), (8, 2658915), (9, 2363480), (10, 2127132), (12, 1772610), (14, 1519380), (15, 1418088), (18, 1181740), (20, 1063566), (21, 1012920), (23, 924840), (24, 886305), (28, 759690), (30, 709044), (35, 607752), (36, 590870), (40, 531783), (42, 506460), (45, 472696), (46, 462420), (56, 379845), (60, 354522), (63, 337640), (69, 308280), (70, 303876), (72, 295435), (84, 253230), (90, 236348), (92, 231210), (105, 202584), (115, 184968), (120, 177261), (126, 168820), (138, 154140), (140, 151938), (161, 132120), (168, 126615), (180, 118174), (184, 115605), (207, 102760), (210, 101292), (230, 92484), (252, 84410), (276, 77070), (280, 75969), (315, 67528), (322, 66060), (345, 61656), (360, 59087), (367, 57960), (414, 51380), (420, 50646), (460, 46242), (483, 44040), (504, 42205), (552, 38535), (630, 33764), (644, 33030), (690, 30828), (734, 28980), (805, 26424), (828, 25690), (840, 25323), (920, 23121), (966, 22020), (1035, 20552), (1101, 19320), (1260, 16882), (1288, 16515), (1380, 15414), (1449, 14680), (1468, 14490), (1610, 13212), (1656, 12845), (1835, 11592), (1932, 11010), (2070, 10276), (2202, 9660), (2415, 8808), (2520, 8441), (2569, 8280), (2760, 7707), (2898, 7340), (2936, 7245), (3220, 6606), (3303, 6440), (3670, 5796), (3864, 5505), (4140, 5138), (4404, 4830)]