21020688000

素因数分解:

$2^7\times 3^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1$

素因数の和:267

約数の個数: 1024

約数和(自身を含む): 88216128000

約数和(自身を除く): 67195440000

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 19, 20, 24, 25, 26, 27, 30, 32, 36, 38, 39, 40, 45, 48, 50, 52, 54, 57, 60, 64, 65, 72, 75, 76, 78, 80, 90, 95, 96, 100, 104, 108, 114, 117, 120, 125, 128, 130, 135, 144, 150, 152, 156, 160, 171, 180, 190, 192, 195, 197, 200, 208, 216, 225, 228, 234, 240, 247, 250, 260, 270, 285, 288, 300, 304, 312, 320, 325, 342, 351, 360, 375, 380, 384, 390, 394, 400, 416, 432, 450, 456, 468, 475, 480, 494, 500, 513, 520, 540, 570, 576, 585, 591, 600, 608, 624, 640, 650, 675, 684, 702, 720, 741, 750, 760, 780, 788, 800, 832, 855, 864, 900, 912, 936, 950, 960, 975, 985, 988, 1000, 1026, 1040, 1080, 1125, 1140, 1152, 1170, 1182, 1200, 1216, 1235, 1248, 1300, 1350, 1368, 1404, 1425, 1440, 1482, 1500, 1520, 1560, 1576, 1600, 1625, 1664, 1710, 1728, 1755, 1773, 1800, 1824, 1872, 1900, 1920, 1950, 1970, 1976, 2000, 2052, 2080, 2160, 2223, 2250, 2280, 2340, 2364, 2375, 2400, 2432, 2470, 2496, 2561, 2565, 2600, 2700, 2736, 2808, 2850, 2880, 2925, 2955, 2964, 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約数ペア:

[(1, 21020688000), (2, 10510344000), (3, 7006896000), (4, 5255172000), (5, 4204137600), (6, 3503448000), (8, 2627586000), (9, 2335632000), (10, 2102068800), (12, 1751724000), (13, 1616976000), (15, 1401379200), (16, 1313793000), (18, 1167816000), (19, 1106352000), (20, 1051034400), (24, 875862000), (25, 840827520), (26, 808488000), (27, 778544000), (30, 700689600), (32, 656896500), (36, 583908000), (38, 553176000), (39, 538992000), (40, 525517200), (45, 467126400), (48, 437931000), (50, 420413760), (52, 404244000), (54, 389272000), (57, 368784000), (60, 350344800), (64, 328448250), (65, 323395200), (72, 291954000), (75, 280275840), (76, 276588000), (78, 269496000), (80, 262758600), (90, 233563200), (95, 221270400), (96, 218965500), (100, 210206880), (104, 202122000), (108, 194636000), (114, 184392000), (117, 179664000), (120, 175172400), (125, 168165504), (128, 164224125), (130, 161697600), (135, 155708800), (144, 145977000), (150, 140137920), (152, 138294000), (156, 134748000), (160, 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