19018000

素因数分解:

$2^4\times 5^3\times {\mathrm{37}}^1\times {\mathrm{257}}^1$

素因数の和:317

約数の個数: 80

約数和(自身を含む): 47412144

約数和(自身を除く): 28394144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 37, 40, 50, 74, 80, 100, 125, 148, 185, 200, 250, 257, 296, 370, 400, 500, 514, 592, 740, 925, 1000, 1028, 1285, 1480, 1850, 2000, 2056, 2570, 2960, 3700, 4112, 4625, 5140, 6425, 7400, 9250, 9509, 10280, 12850, 14800, 18500, 19018, 20560, 25700, 32125, 37000, 38036, 47545, 51400, 64250, 74000, 76072, 95090, 102800, 128500, 152144, 190180, 237725, 257000, 380360, 475450, 514000, 760720, 950900, 1188625, 1901800, 2377250, 3803600, 4754500, 9509000, 19018000]

約数ペア:

[(1, 19018000), (2, 9509000), (4, 4754500), (5, 3803600), (8, 2377250), (10, 1901800), (16, 1188625), (20, 950900), (25, 760720), (37, 514000), (40, 475450), (50, 380360), (74, 257000), (80, 237725), (100, 190180), (125, 152144), (148, 128500), (185, 102800), (200, 95090), (250, 76072), (257, 74000), (296, 64250), (370, 51400), (400, 47545), (500, 38036), (514, 37000), (592, 32125), (740, 25700), (925, 20560), (1000, 19018), (1028, 18500), (1285, 14800), (1480, 12850), (1850, 10280), (2000, 9509), (2056, 9250), (2570, 7400), (2960, 6425), (3700, 5140), (4112, 4625)]