81221280

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1051}}^1$

素因数の和:1099

約数の個数: 192

約数和(自身を含む): 305399808

約数和(自身を除く): 224178528

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 23, 24, 28, 30, 32, 35, 40, 42, 46, 48, 56, 60, 69, 70, 80, 84, 92, 96, 105, 112, 115, 120, 138, 140, 160, 161, 168, 184, 210, 224, 230, 240, 276, 280, 322, 336, 345, 368, 420, 460, 480, 483, 552, 560, 644, 672, 690, 736, 805, 840, 920, 966, 1051, 1104, 1120, 1288, 1380, 1610, 1680, 1840, 1932, 2102, 2208, 2415, 2576, 2760, 3153, 3220, 3360, 3680, 3864, 4204, 4830, 5152, 5255, 5520, 6306, 6440, 7357, 7728, 8408, 9660, 10510, 11040, 12612, 12880, 14714, 15456, 15765, 16816, 19320, 21020, 22071, 24173, 25224, 25760, 29428, 31530, 33632, 36785, 38640, 42040, 44142, 48346, 50448, 58856, 63060, 72519, 73570, 77280, 84080, 88284, 96692, 100896, 110355, 117712, 120865, 126120, 145038, 147140, 168160, 169211, 176568, 193384, 220710, 235424, 241730, 252240, 290076, 294280, 338422, 353136, 362595, 386768, 441420, 483460, 504480, 507633, 580152, 588560, 676844, 706272, 725190, 773536, 846055, 882840, 966920, 1015266, 1160304, 1177120, 1353688, 1450380, 1692110, 1765680, 1933840, 2030532, 2320608, 2538165, 2707376, 2900760, 3384220, 3531360, 3867680, 4061064, 5076330, 5414752, 5801520, 6768440, 8122128, 10152660, 11603040, 13536880, 16244256, 20305320, 27073760, 40610640, 81221280]

約数ペア:

[(1, 81221280), (2, 40610640), (3, 27073760), (4, 20305320), (5, 16244256), (6, 13536880), (7, 11603040), (8, 10152660), (10, 8122128), (12, 6768440), (14, 5801520), (15, 5414752), (16, 5076330), (20, 4061064), (21, 3867680), (23, 3531360), (24, 3384220), (28, 2900760), (30, 2707376), (32, 2538165), (35, 2320608), (40, 2030532), (42, 1933840), (46, 1765680), (48, 1692110), (56, 1450380), (60, 1353688), (69, 1177120), (70, 1160304), (80, 1015266), (84, 966920), (92, 882840), (96, 846055), (105, 773536), (112, 725190), (115, 706272), (120, 676844), (138, 588560), (140, 580152), (160, 507633), (161, 504480), (168, 483460), (184, 441420), (210, 386768), (224, 362595), (230, 353136), (240, 338422), (276, 294280), (280, 290076), (322, 252240), (336, 241730), (345, 235424), (368, 220710), (420, 193384), (460, 176568), (480, 169211), (483, 168160), (552, 147140), (560, 145038), (644, 126120), (672, 120865), (690, 117712), (736, 110355), (805, 100896), (840, 96692), (920, 88284), (966, 84080), (1051, 77280), (1104, 73570), (1120, 72519), (1288, 63060), (1380, 58856), (1610, 50448), (1680, 48346), (1840, 44142), (1932, 42040), (2102, 38640), (2208, 36785), (2415, 33632), (2576, 31530), (2760, 29428), (3153, 25760), (3220, 25224), (3360, 24173), (3680, 22071), (3864, 21020), (4204, 19320), (4830, 16816), (5152, 15765), (5255, 15456), (5520, 14714), (6306, 12880), (6440, 12612), (7357, 11040), (7728, 10510), (8408, 9660)]