20557440

素因数分解:

$2^7\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:151

約数の個数: 192

約数和(自身を含む): 73513440

約数和(自身を除く): 52956000

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 43, 45, 48, 60, 64, 72, 80, 83, 86, 90, 96, 120, 128, 129, 144, 160, 166, 172, 180, 192, 215, 240, 249, 258, 288, 320, 332, 344, 360, 384, 387, 415, 430, 480, 498, 516, 576, 640, 645, 664, 688, 720, 747, 774, 830, 860, 960, 996, 1032, 1152, 1245, 1290, 1328, 1376, 1440, 1494, 1548, 1660, 1720, 1920, 1935, 1992, 2064, 2490, 2580, 2656, 2752, 2880, 2988, 3096, 3320, 3440, 3569, 3735, 3870, 3984, 4128, 4980, 5160, 5312, 5504, 5760, 5976, 6192, 6640, 6880, 7138, 7470, 7740, 7968, 8256, 9960, 10320, 10624, 10707, 11952, 12384, 13280, 13760, 14276, 14940, 15480, 15936, 16512, 17845, 19920, 20640, 21414, 23904, 24768, 26560, 27520, 28552, 29880, 30960, 31872, 32121, 35690, 39840, 41280, 42828, 47808, 49536, 53120, 53535, 57104, 59760, 61920, 64242, 71380, 79680, 82560, 85656, 95616, 107070, 114208, 119520, 123840, 128484, 142760, 159360, 160605, 171312, 214140, 228416, 239040, 247680, 256968, 285520, 321210, 342624, 428280, 456832, 478080, 513936, 571040, 642420, 685248, 856560, 1027872, 1142080, 1284840, 1370496, 1713120, 2055744, 2284160, 2569680, 3426240, 4111488, 5139360, 6852480, 10278720, 20557440]

約数ペア:

[(1, 20557440), (2, 10278720), (3, 6852480), (4, 5139360), (5, 4111488), (6, 3426240), (8, 2569680), (9, 2284160), (10, 2055744), (12, 1713120), (15, 1370496), (16, 1284840), (18, 1142080), (20, 1027872), (24, 856560), (30, 685248), (32, 642420), (36, 571040), (40, 513936), (43, 478080), (45, 456832), (48, 428280), (60, 342624), (64, 321210), (72, 285520), (80, 256968), (83, 247680), (86, 239040), (90, 228416), (96, 214140), (120, 171312), (128, 160605), (129, 159360), (144, 142760), (160, 128484), (166, 123840), (172, 119520), (180, 114208), (192, 107070), (215, 95616), (240, 85656), (249, 82560), (258, 79680), (288, 71380), (320, 64242), (332, 61920), (344, 59760), (360, 57104), (384, 53535), (387, 53120), (415, 49536), (430, 47808), (480, 42828), (498, 41280), (516, 39840), (576, 35690), (640, 32121), (645, 31872), (664, 30960), (688, 29880), (720, 28552), (747, 27520), (774, 26560), (830, 24768), (860, 23904), (960, 21414), (996, 20640), (1032, 19920), (1152, 17845), (1245, 16512), (1290, 15936), (1328, 15480), (1376, 14940), (1440, 14276), (1494, 13760), (1548, 13280), (1660, 12384), (1720, 11952), (1920, 10707), (1935, 10624), (1992, 10320), (2064, 9960), (2490, 8256), (2580, 7968), (2656, 7740), (2752, 7470), (2880, 7138), (2988, 6880), (3096, 6640), (3320, 6192), (3440, 5976), (3569, 5760), (3735, 5504), (3870, 5312), (3984, 5160), (4128, 4980)]