20809800

素因数分解:

$2^3\times 3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{1051}}^1$

素因数の和:1084

約数の個数: 144

約数和(自身を含む): 76312080

約数和(自身を除く): 55502280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 25, 30, 33, 36, 40, 44, 45, 50, 55, 60, 66, 72, 75, 88, 90, 99, 100, 110, 120, 132, 150, 165, 180, 198, 200, 220, 225, 264, 275, 300, 330, 360, 396, 440, 450, 495, 550, 600, 660, 792, 825, 900, 990, 1051, 1100, 1320, 1650, 1800, 1980, 2102, 2200, 2475, 3153, 3300, 3960, 4204, 4950, 5255, 6306, 6600, 8408, 9459, 9900, 10510, 11561, 12612, 15765, 18918, 19800, 21020, 23122, 25224, 26275, 31530, 34683, 37836, 42040, 46244, 47295, 52550, 57805, 63060, 69366, 75672, 78825, 92488, 94590, 104049, 105100, 115610, 126120, 138732, 157650, 173415, 189180, 208098, 210200, 231220, 236475, 277464, 289025, 315300, 346830, 378360, 416196, 462440, 472950, 520245, 578050, 630600, 693660, 832392, 867075, 945900, 1040490, 1156100, 1387320, 1734150, 1891800, 2080980, 2312200, 2601225, 3468300, 4161960, 5202450, 6936600, 10404900, 20809800]

約数ペア:

[(1, 20809800), (2, 10404900), (3, 6936600), (4, 5202450), (5, 4161960), (6, 3468300), (8, 2601225), (9, 2312200), (10, 2080980), (11, 1891800), (12, 1734150), (15, 1387320), (18, 1156100), (20, 1040490), (22, 945900), (24, 867075), (25, 832392), (30, 693660), (33, 630600), (36, 578050), (40, 520245), (44, 472950), (45, 462440), (50, 416196), (55, 378360), (60, 346830), (66, 315300), (72, 289025), (75, 277464), (88, 236475), (90, 231220), (99, 210200), (100, 208098), (110, 189180), (120, 173415), (132, 157650), (150, 138732), (165, 126120), (180, 115610), (198, 105100), (200, 104049), (220, 94590), (225, 92488), (264, 78825), (275, 75672), (300, 69366), (330, 63060), (360, 57805), (396, 52550), (440, 47295), (450, 46244), (495, 42040), (550, 37836), (600, 34683), (660, 31530), (792, 26275), (825, 25224), (900, 23122), (990, 21020), (1051, 19800), (1100, 18918), (1320, 15765), (1650, 12612), (1800, 11561), (1980, 10510), (2102, 9900), (2200, 9459), (2475, 8408), (3153, 6600), (3300, 6306), (3960, 5255), (4204, 4950)]