20498400

素因数分解:

$2^5\times 3^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1$

素因数の和:115

約数の個数: 288

約数和(自身を含む): 80932320

約数和(自身を除く): 60433920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 25, 26, 27, 30, 32, 36, 39, 40, 45, 48, 50, 52, 54, 60, 65, 72, 73, 75, 78, 80, 90, 96, 100, 104, 108, 117, 120, 130, 135, 144, 146, 150, 156, 160, 180, 195, 200, 208, 216, 219, 225, 234, 240, 260, 270, 288, 292, 300, 312, 325, 351, 360, 365, 390, 400, 416, 432, 438, 450, 468, 480, 520, 540, 584, 585, 600, 624, 650, 657, 675, 702, 720, 730, 780, 800, 864, 876, 900, 936, 949, 975, 1040, 1080, 1095, 1168, 1170, 1200, 1248, 1300, 1314, 1350, 1404, 1440, 1460, 1560, 1752, 1755, 1800, 1825, 1872, 1898, 1950, 1971, 2080, 2160, 2190, 2336, 2340, 2400, 2600, 2628, 2700, 2808, 2847, 2920, 2925, 3120, 3285, 3504, 3510, 3600, 3650, 3744, 3796, 3900, 3942, 4320, 4380, 4680, 4745, 5200, 5256, 5400, 5475, 5616, 5694, 5840, 5850, 6240, 6570, 7008, 7020, 7200, 7300, 7592, 7800, 7884, 8541, 8760, 8775, 9360, 9490, 9855, 10400, 10512, 10800, 10950, 11232, 11388, 11680, 11700, 13140, 14040, 14235, 14600, 15184, 15600, 15768, 16425, 17082, 17520, 17550, 18720, 18980, 19710, 21024, 21600, 21900, 22776, 23400, 23725, 25623, 26280, 28080, 28470, 29200, 30368, 31200, 31536, 32850, 34164, 35040, 35100, 37960, 39420, 42705, 43800, 45552, 46800, 47450, 49275, 51246, 52560, 56160, 56940, 58400, 63072, 65700, 68328, 70200, 71175, 75920, 78840, 85410, 87600, 91104, 93600, 94900, 98550, 102492, 105120, 113880, 128115, 131400, 136656, 140400, 142350, 151840, 157680, 170820, 175200, 189800, 197100, 204984, 213525, 227760, 256230, 262800, 273312, 280800, 284700, 315360, 341640, 379600, 394200, 409968, 427050, 455520, 512460, 525600, 569400, 640575, 683280, 759200, 788400, 819936, 854100, 1024920, 1138800, 1281150, 1366560, 1576800, 1708200, 2049840, 2277600, 2562300, 3416400, 4099680, 5124600, 6832800, 10249200, 20498400]

約数ペア:

[(1, 20498400), (2, 10249200), (3, 6832800), (4, 5124600), (5, 4099680), (6, 3416400), (8, 2562300), (9, 2277600), (10, 2049840), (12, 1708200), (13, 1576800), (15, 1366560), (16, 1281150), (18, 1138800), (20, 1024920), (24, 854100), (25, 819936), (26, 788400), (27, 759200), (30, 683280), (32, 640575), (36, 569400), (39, 525600), (40, 512460), (45, 455520), (48, 427050), (50, 409968), (52, 394200), (54, 379600), (60, 341640), (65, 315360), (72, 284700), (73, 280800), (75, 273312), (78, 262800), (80, 256230), (90, 227760), (96, 213525), (100, 204984), (104, 197100), (108, 189800), (117, 175200), (120, 170820), (130, 157680), (135, 151840), (144, 142350), (146, 140400), (150, 136656), (156, 131400), (160, 128115), (180, 113880), (195, 105120), (200, 102492), (208, 98550), (216, 94900), (219, 93600), (225, 91104), (234, 87600), (240, 85410), (260, 78840), (270, 75920), (288, 71175), (292, 70200), (300, 68328), (312, 65700), (325, 63072), (351, 58400), (360, 56940), (365, 56160), (390, 52560), (400, 51246), (416, 49275), (432, 47450), (438, 46800), (450, 45552), (468, 43800), (480, 42705), (520, 39420), (540, 37960), (584, 35100), (585, 35040), (600, 34164), (624, 32850), (650, 31536), (657, 31200), (675, 30368), (702, 29200), (720, 28470), (730, 28080), (780, 26280), (800, 25623), (864, 23725), (876, 23400), (900, 22776), (936, 21900), (949, 21600), (975, 21024), (1040, 19710), (1080, 18980), (1095, 18720), (1168, 17550), (1170, 17520), (1200, 17082), (1248, 16425), (1300, 15768), (1314, 15600), (1350, 15184), (1404, 14600), (1440, 14235), (1460, 14040), (1560, 13140), (1752, 11700), (1755, 11680), (1800, 11388), (1825, 11232), (1872, 10950), (1898, 10800), (1950, 10512), (1971, 10400), (2080, 9855), (2160, 9490), (2190, 9360), (2336, 8775), (2340, 8760), (2400, 8541), (2600, 7884), (2628, 7800), (2700, 7592), (2808, 7300), (2847, 7200), (2920, 7020), (2925, 7008), (3120, 6570), (3285, 6240), (3504, 5850), (3510, 5840), (3600, 5694), (3650, 5616), (3744, 5475), (3796, 5400), (3900, 5256), (3942, 5200), (4320, 4745), (4380, 4680)]