81139000

素因数分解:

$2^3\times 5^3\times {\mathrm{41}}^1\times {\mathrm{1979}}^1$

素因数の和:2041

約数の個数: 64

約数和(自身を含む): 194594400

約数和(自身を除く): 113455400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 125, 164, 200, 205, 250, 328, 410, 500, 820, 1000, 1025, 1640, 1979, 2050, 3958, 4100, 5125, 7916, 8200, 9895, 10250, 15832, 19790, 20500, 39580, 41000, 49475, 79160, 81139, 98950, 162278, 197900, 247375, 324556, 395800, 405695, 494750, 649112, 811390, 989500, 1622780, 1979000, 2028475, 3245560, 4056950, 8113900, 10142375, 16227800, 20284750, 40569500, 81139000]

約数ペア:

[(1, 81139000), (2, 40569500), (4, 20284750), (5, 16227800), (8, 10142375), (10, 8113900), (20, 4056950), (25, 3245560), (40, 2028475), (41, 1979000), (50, 1622780), (82, 989500), (100, 811390), (125, 649112), (164, 494750), (200, 405695), (205, 395800), (250, 324556), (328, 247375), (410, 197900), (500, 162278), (820, 98950), (1000, 81139), (1025, 79160), (1640, 49475), (1979, 41000), (2050, 39580), (3958, 20500), (4100, 19790), (5125, 15832), (7916, 10250), (8200, 9895)]