18387840

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:240

約数の個数: 128

約数和(自身を含む): 59951520

約数和(自身を除く): 41563680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 61, 64, 80, 96, 120, 122, 128, 157, 160, 183, 192, 240, 244, 305, 314, 320, 366, 384, 471, 480, 488, 610, 628, 640, 732, 785, 915, 942, 960, 976, 1220, 1256, 1464, 1570, 1830, 1884, 1920, 1952, 2355, 2440, 2512, 2928, 3140, 3660, 3768, 3904, 4710, 4880, 5024, 5856, 6280, 7320, 7536, 7808, 9420, 9577, 9760, 10048, 11712, 12560, 14640, 15072, 18840, 19154, 19520, 20096, 23424, 25120, 28731, 29280, 30144, 37680, 38308, 39040, 47885, 50240, 57462, 58560, 60288, 75360, 76616, 95770, 100480, 114924, 117120, 143655, 150720, 153232, 191540, 229848, 287310, 301440, 306464, 383080, 459696, 574620, 612928, 766160, 919392, 1149240, 1225856, 1532320, 1838784, 2298480, 3064640, 3677568, 4596960, 6129280, 9193920, 18387840]

約数ペア:

[(1, 18387840), (2, 9193920), (3, 6129280), (4, 4596960), (5, 3677568), (6, 3064640), (8, 2298480), (10, 1838784), (12, 1532320), (15, 1225856), (16, 1149240), (20, 919392), (24, 766160), (30, 612928), (32, 574620), (40, 459696), (48, 383080), (60, 306464), (61, 301440), (64, 287310), (80, 229848), (96, 191540), (120, 153232), (122, 150720), (128, 143655), (157, 117120), (160, 114924), (183, 100480), (192, 95770), (240, 76616), (244, 75360), (305, 60288), (314, 58560), (320, 57462), (366, 50240), (384, 47885), (471, 39040), (480, 38308), (488, 37680), (610, 30144), (628, 29280), (640, 28731), (732, 25120), (785, 23424), (915, 20096), (942, 19520), (960, 19154), (976, 18840), (1220, 15072), (1256, 14640), (1464, 12560), (1570, 11712), (1830, 10048), (1884, 9760), (1920, 9577), (1952, 9420), (2355, 7808), (2440, 7536), (2512, 7320), (2928, 6280), (3140, 5856), (3660, 5024), (3768, 4880), (3904, 4710)]