20919600

素因数分解:

$2^4\times 3^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{149}}^1$

素因数の和:189

約数の個数: 240

約数和(自身を含む): 80724000

約数和(自身を除く): 59804400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 25, 26, 27, 30, 36, 39, 40, 45, 48, 50, 52, 54, 60, 65, 72, 75, 78, 80, 90, 100, 104, 108, 117, 120, 130, 135, 144, 149, 150, 156, 180, 195, 200, 208, 216, 225, 234, 240, 260, 270, 298, 300, 312, 325, 351, 360, 390, 400, 432, 447, 450, 468, 520, 540, 585, 596, 600, 624, 650, 675, 702, 720, 745, 780, 894, 900, 936, 975, 1040, 1080, 1170, 1192, 1200, 1300, 1341, 1350, 1404, 1490, 1560, 1755, 1788, 1800, 1872, 1937, 1950, 2160, 2235, 2340, 2384, 2600, 2682, 2700, 2808, 2925, 2980, 3120, 3510, 3576, 3600, 3725, 3874, 3900, 4023, 4470, 4680, 5200, 5364, 5400, 5616, 5811, 5850, 5960, 6705, 7020, 7152, 7450, 7748, 7800, 8046, 8775, 8940, 9360, 9685, 10728, 10800, 11175, 11622, 11700, 11920, 13410, 14040, 14900, 15496, 15600, 16092, 17433, 17550, 17880, 19370, 20115, 21456, 22350, 23244, 23400, 26820, 28080, 29055, 29800, 30992, 32184, 33525, 34866, 35100, 35760, 38740, 40230, 44700, 46488, 46800, 48425, 52299, 53640, 58110, 59600, 64368, 67050, 69732, 70200, 77480, 80460, 87165, 89400, 92976, 96850, 100575, 104598, 107280, 116220, 134100, 139464, 140400, 145275, 154960, 160920, 174330, 178800, 193700, 201150, 209196, 232440, 261495, 268200, 278928, 290550, 321840, 348660, 387400, 402300, 418392, 435825, 464880, 522990, 536400, 581100, 697320, 774800, 804600, 836784, 871650, 1045980, 1162200, 1307475, 1394640, 1609200, 1743300, 2091960, 2324400, 2614950, 3486600, 4183920, 5229900, 6973200, 10459800, 20919600]

約数ペア:

[(1, 20919600), (2, 10459800), (3, 6973200), (4, 5229900), (5, 4183920), (6, 3486600), (8, 2614950), (9, 2324400), (10, 2091960), (12, 1743300), (13, 1609200), (15, 1394640), (16, 1307475), (18, 1162200), (20, 1045980), (24, 871650), (25, 836784), (26, 804600), (27, 774800), (30, 697320), (36, 581100), (39, 536400), (40, 522990), (45, 464880), (48, 435825), (50, 418392), (52, 402300), (54, 387400), (60, 348660), (65, 321840), (72, 290550), (75, 278928), (78, 268200), (80, 261495), (90, 232440), (100, 209196), (104, 201150), (108, 193700), (117, 178800), (120, 174330), (130, 160920), (135, 154960), (144, 145275), (149, 140400), (150, 139464), (156, 134100), (180, 116220), (195, 107280), (200, 104598), (208, 100575), (216, 96850), (225, 92976), (234, 89400), (240, 87165), (260, 80460), (270, 77480), (298, 70200), (300, 69732), (312, 67050), (325, 64368), (351, 59600), (360, 58110), (390, 53640), (400, 52299), (432, 48425), (447, 46800), (450, 46488), (468, 44700), (520, 40230), (540, 38740), (585, 35760), (596, 35100), (600, 34866), (624, 33525), (650, 32184), (675, 30992), (702, 29800), (720, 29055), (745, 28080), (780, 26820), (894, 23400), (900, 23244), (936, 22350), (975, 21456), (1040, 20115), (1080, 19370), (1170, 17880), (1192, 17550), (1200, 17433), (1300, 16092), (1341, 15600), (1350, 15496), (1404, 14900), (1490, 14040), (1560, 13410), (1755, 11920), (1788, 11700), (1800, 11622), (1872, 11175), (1937, 10800), (1950, 10728), (2160, 9685), (2235, 9360), (2340, 8940), (2384, 8775), (2600, 8046), (2682, 7800), (2700, 7748), (2808, 7450), (2925, 7152), (2980, 7020), (3120, 6705), (3510, 5960), (3576, 5850), (3600, 5811), (3725, 5616), (3874, 5400), (3900, 5364), (4023, 5200), (4470, 4680)]