18001800

素因数分解:

$2^3\times 3^2\times 5^2\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:232

約数の個数: 144

約数和(自身を含む): 61731540

約数和(自身を除く): 43729740

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 36, 40, 45, 50, 60, 72, 73, 75, 90, 100, 120, 137, 146, 150, 180, 200, 219, 225, 274, 292, 300, 360, 365, 411, 438, 450, 548, 584, 600, 657, 685, 730, 822, 876, 900, 1095, 1096, 1233, 1314, 1370, 1460, 1644, 1752, 1800, 1825, 2055, 2190, 2466, 2628, 2740, 2920, 3285, 3288, 3425, 3650, 4110, 4380, 4932, 5256, 5475, 5480, 6165, 6570, 6850, 7300, 8220, 8760, 9864, 10001, 10275, 10950, 12330, 13140, 13700, 14600, 16425, 16440, 20002, 20550, 21900, 24660, 26280, 27400, 30003, 30825, 32850, 40004, 41100, 43800, 49320, 50005, 60006, 61650, 65700, 80008, 82200, 90009, 100010, 120012, 123300, 131400, 150015, 180018, 200020, 240024, 246600, 250025, 300030, 360036, 400040, 450045, 500050, 600060, 720072, 750075, 900090, 1000100, 1200120, 1500150, 1800180, 2000200, 2250225, 3000300, 3600360, 4500450, 6000600, 9000900, 18001800]

約数ペア:

[(1, 18001800), (2, 9000900), (3, 6000600), (4, 4500450), (5, 3600360), (6, 3000300), (8, 2250225), (9, 2000200), (10, 1800180), (12, 1500150), (15, 1200120), (18, 1000100), (20, 900090), (24, 750075), (25, 720072), (30, 600060), (36, 500050), (40, 450045), (45, 400040), (50, 360036), (60, 300030), (72, 250025), (73, 246600), (75, 240024), (90, 200020), (100, 180018), (120, 150015), (137, 131400), (146, 123300), (150, 120012), (180, 100010), (200, 90009), (219, 82200), (225, 80008), (274, 65700), (292, 61650), (300, 60006), (360, 50005), (365, 49320), (411, 43800), (438, 41100), (450, 40004), (548, 32850), (584, 30825), (600, 30003), (657, 27400), (685, 26280), (730, 24660), (822, 21900), (876, 20550), (900, 20002), (1095, 16440), (1096, 16425), (1233, 14600), (1314, 13700), (1370, 13140), (1460, 12330), (1644, 10950), (1752, 10275), (1800, 10001), (1825, 9864), (2055, 8760), (2190, 8220), (2466, 7300), (2628, 6850), (2740, 6570), (2920, 6165), (3285, 5480), (3288, 5475), (3425, 5256), (3650, 4932), (4110, 4380)]