20905115000

素因数分解:

$2^3\times 5^4\times 7^2\times {\mathrm{11}}^1\times {\mathrm{7757}}^1$

素因数の和:7808

約数の個数: 240

約数和(自身を含む): 62165319480

約数和(自身を除く): 41260204480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 25, 28, 35, 40, 44, 49, 50, 55, 56, 70, 77, 88, 98, 100, 110, 125, 140, 154, 175, 196, 200, 220, 245, 250, 275, 280, 308, 350, 385, 392, 440, 490, 500, 539, 550, 616, 625, 700, 770, 875, 980, 1000, 1078, 1100, 1225, 1250, 1375, 1400, 1540, 1750, 1925, 1960, 2156, 2200, 2450, 2500, 2695, 2750, 3080, 3500, 3850, 4312, 4375, 4900, 5000, 5390, 5500, 6125, 6875, 7000, 7700, 7757, 8750, 9625, 9800, 10780, 11000, 12250, 13475, 13750, 15400, 15514, 17500, 19250, 21560, 24500, 26950, 27500, 30625, 31028, 35000, 38500, 38785, 48125, 49000, 53900, 54299, 55000, 61250, 62056, 67375, 77000, 77570, 85327, 96250, 107800, 108598, 122500, 134750, 155140, 170654, 192500, 193925, 217196, 245000, 269500, 271495, 310280, 336875, 341308, 380093, 385000, 387850, 426635, 434392, 539000, 542990, 597289, 673750, 682616, 760186, 775700, 853270, 969625, 1085980, 1194578, 1347500, 1357475, 1520372, 1551400, 1706540, 1900465, 1939250, 2133175, 2171960, 2389156, 2695000, 2714950, 2986445, 3040744, 3413080, 3800930, 3878500, 4181023, 4266350, 4778312, 4848125, 5429900, 5972890, 6787375, 7601860, 7757000, 8362046, 8532700, 9502325, 9696250, 10665875, 10859800, 11945780, 13574750, 14932225, 15203720, 16724092, 17065400, 19004650, 19392500, 20905115, 21331750, 23891560, 27149500, 29864450, 33448184, 33936875, 38009300, 38785000, 41810230, 42663500, 47511625, 53329375, 54299000, 59728900, 67873750, 74661125, 76018600, 83620460, 85327000, 95023250, 104525575, 106658750, 119457800, 135747500, 149322250, 167240920, 190046500, 209051150, 213317500, 237558125, 271495000, 298644500, 373305625, 380093000, 418102300, 426635000, 475116250, 522627875, 597289000, 746611250, 836204600, 950232500, 1045255750, 1493222500, 1900465000, 2090511500, 2613139375, 2986445000, 4181023000, 5226278750, 10452557500, 20905115000]

約数ペア:

[(1, 20905115000), (2, 10452557500), (4, 5226278750), (5, 4181023000), (7, 2986445000), (8, 2613139375), (10, 2090511500), (11, 1900465000), (14, 1493222500), (20, 1045255750), (22, 950232500), (25, 836204600), (28, 746611250), (35, 597289000), (40, 522627875), (44, 475116250), (49, 426635000), (50, 418102300), (55, 380093000), (56, 373305625), (70, 298644500), (77, 271495000), (88, 237558125), (98, 213317500), (100, 209051150), (110, 190046500), (125, 167240920), (140, 149322250), (154, 135747500), (175, 119457800), (196, 106658750), (200, 104525575), (220, 95023250), (245, 85327000), (250, 83620460), (275, 76018600), (280, 74661125), (308, 67873750), (350, 59728900), (385, 54299000), (392, 53329375), (440, 47511625), (490, 42663500), (500, 41810230), (539, 38785000), (550, 38009300), (616, 33936875), (625, 33448184), (700, 29864450), (770, 27149500), (875, 23891560), (980, 21331750), (1000, 20905115), (1078, 19392500), (1100, 19004650), (1225, 17065400), (1250, 16724092), (1375, 15203720), (1400, 14932225), (1540, 13574750), (1750, 11945780), (1925, 10859800), (1960, 10665875), (2156, 9696250), (2200, 9502325), (2450, 8532700), (2500, 8362046), (2695, 7757000), (2750, 7601860), (3080, 6787375), (3500, 5972890), (3850, 5429900), (4312, 4848125), (4375, 4778312), (4900, 4266350), (5000, 4181023), (5390, 3878500), (5500, 3800930), (6125, 3413080), (6875, 3040744), (7000, 2986445), (7700, 2714950), (7757, 2695000), (8750, 2389156), (9625, 2171960), (9800, 2133175), (10780, 1939250), (11000, 1900465), (12250, 1706540), (13475, 1551400), (13750, 1520372), (15400, 1357475), (15514, 1347500), (17500, 1194578), (19250, 1085980), (21560, 969625), (24500, 853270), (26950, 775700), (27500, 760186), (30625, 682616), (31028, 673750), (35000, 597289), (38500, 542990), (38785, 539000), (48125, 434392), (49000, 426635), (53900, 387850), (54299, 385000), (55000, 380093), (61250, 341308), (62056, 336875), (67375, 310280), (77000, 271495), (77570, 269500), (85327, 245000), (96250, 217196), (107800, 193925), (108598, 192500), (122500, 170654), (134750, 155140)]