20702000

素因数分解:

$2^4\times 5^3\times {\mathrm{11}}^1\times {\mathrm{941}}^1$

素因数の和:975

約数の個数: 80

約数和(自身を含む): 54666144

約数和(自身を除く): 33964144

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 125, 176, 200, 220, 250, 275, 400, 440, 500, 550, 880, 941, 1000, 1100, 1375, 1882, 2000, 2200, 2750, 3764, 4400, 4705, 5500, 7528, 9410, 10351, 11000, 15056, 18820, 20702, 22000, 23525, 37640, 41404, 47050, 51755, 75280, 82808, 94100, 103510, 117625, 165616, 188200, 207020, 235250, 258775, 376400, 414040, 470500, 517550, 828080, 941000, 1035100, 1293875, 1882000, 2070200, 2587750, 4140400, 5175500, 10351000, 20702000]

約数ペア:

[(1, 20702000), (2, 10351000), (4, 5175500), (5, 4140400), (8, 2587750), (10, 2070200), (11, 1882000), (16, 1293875), (20, 1035100), (22, 941000), (25, 828080), (40, 517550), (44, 470500), (50, 414040), (55, 376400), (80, 258775), (88, 235250), (100, 207020), (110, 188200), (125, 165616), (176, 117625), (200, 103510), (220, 94100), (250, 82808), (275, 75280), (400, 51755), (440, 47050), (500, 41404), (550, 37640), (880, 23525), (941, 22000), (1000, 20702), (1100, 18820), (1375, 15056), (1882, 11000), (2000, 10351), (2200, 9410), (2750, 7528), (3764, 5500), (4400, 4705)]