81902000

素因数分解:

$2^4\times 5^3\times {\mathrm{31}}^1\times {\mathrm{1321}}^1$

素因数の和:1375

約数の個数: 80

約数和(自身を含む): 204582144

約数和(自身を除く): 122680144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 125, 155, 200, 248, 250, 310, 400, 496, 500, 620, 775, 1000, 1240, 1321, 1550, 2000, 2480, 2642, 3100, 3875, 5284, 6200, 6605, 7750, 10568, 12400, 13210, 15500, 21136, 26420, 31000, 33025, 40951, 52840, 62000, 66050, 81902, 105680, 132100, 163804, 165125, 204755, 264200, 327608, 330250, 409510, 528400, 655216, 660500, 819020, 1023775, 1321000, 1638040, 2047550, 2642000, 3276080, 4095100, 5118875, 8190200, 10237750, 16380400, 20475500, 40951000, 81902000]

約数ペア:

[(1, 81902000), (2, 40951000), (4, 20475500), (5, 16380400), (8, 10237750), (10, 8190200), (16, 5118875), (20, 4095100), (25, 3276080), (31, 2642000), (40, 2047550), (50, 1638040), (62, 1321000), (80, 1023775), (100, 819020), (124, 660500), (125, 655216), (155, 528400), (200, 409510), (248, 330250), (250, 327608), (310, 264200), (400, 204755), (496, 165125), (500, 163804), (620, 132100), (775, 105680), (1000, 81902), (1240, 66050), (1321, 62000), (1550, 52840), (2000, 40951), (2480, 33025), (2642, 31000), (3100, 26420), (3875, 21136), (5284, 15500), (6200, 13210), (6605, 12400), (7750, 10568)]