19801800

素因数分解:

$2^3\times 3^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{193}}^1$

素因数の和:237

約数の個数: 192

約数和(自身を含む): 72168000

約数和(自身を除く): 52366200

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 25, 27, 30, 36, 38, 40, 45, 50, 54, 57, 60, 72, 75, 76, 90, 95, 100, 108, 114, 120, 135, 150, 152, 171, 180, 190, 193, 200, 216, 225, 228, 270, 285, 300, 342, 360, 380, 386, 450, 456, 475, 513, 540, 570, 579, 600, 675, 684, 760, 772, 855, 900, 950, 965, 1026, 1080, 1140, 1158, 1350, 1368, 1425, 1544, 1710, 1737, 1800, 1900, 1930, 2052, 2280, 2316, 2565, 2700, 2850, 2895, 3420, 3474, 3667, 3800, 3860, 4104, 4275, 4632, 4825, 5130, 5211, 5400, 5700, 5790, 6840, 6948, 7334, 7720, 8550, 8685, 9650, 10260, 10422, 11001, 11400, 11580, 12825, 13896, 14475, 14668, 17100, 17370, 18335, 19300, 20520, 20844, 22002, 23160, 25650, 26055, 28950, 29336, 33003, 34200, 34740, 36670, 38600, 41688, 43425, 44004, 51300, 52110, 55005, 57900, 66006, 69480, 73340, 86850, 88008, 91675, 99009, 102600, 104220, 110010, 115800, 130275, 132012, 146680, 165015, 173700, 183350, 198018, 208440, 220020, 260550, 264024, 275025, 330030, 347400, 366700, 396036, 440040, 495045, 521100, 550050, 660060, 733400, 792072, 825075, 990090, 1042200, 1100100, 1320120, 1650150, 1980180, 2200200, 2475225, 3300300, 3960360, 4950450, 6600600, 9900900, 19801800]

約数ペア:

[(1, 19801800), (2, 9900900), (3, 6600600), (4, 4950450), (5, 3960360), (6, 3300300), (8, 2475225), (9, 2200200), (10, 1980180), (12, 1650150), (15, 1320120), (18, 1100100), (19, 1042200), (20, 990090), (24, 825075), (25, 792072), (27, 733400), (30, 660060), (36, 550050), (38, 521100), (40, 495045), (45, 440040), (50, 396036), (54, 366700), (57, 347400), (60, 330030), (72, 275025), (75, 264024), (76, 260550), (90, 220020), (95, 208440), (100, 198018), (108, 183350), (114, 173700), (120, 165015), (135, 146680), (150, 132012), (152, 130275), (171, 115800), (180, 110010), (190, 104220), (193, 102600), (200, 99009), (216, 91675), (225, 88008), (228, 86850), (270, 73340), (285, 69480), (300, 66006), (342, 57900), (360, 55005), (380, 52110), (386, 51300), (450, 44004), (456, 43425), (475, 41688), (513, 38600), (540, 36670), (570, 34740), (579, 34200), (600, 33003), (675, 29336), (684, 28950), (760, 26055), (772, 25650), (855, 23160), (900, 22002), (950, 20844), (965, 20520), (1026, 19300), (1080, 18335), (1140, 17370), (1158, 17100), (1350, 14668), (1368, 14475), (1425, 13896), (1544, 12825), (1710, 11580), (1737, 11400), (1800, 11001), (1900, 10422), (1930, 10260), (2052, 9650), (2280, 8685), (2316, 8550), (2565, 7720), (2700, 7334), (2850, 6948), (2895, 6840), (3420, 5790), (3474, 5700), (3667, 5400), (3800, 5211), (3860, 5130), (4104, 4825), (4275, 4632)]