81605000

素因数分解:

$2^3\times 5^4\times {\mathrm{19}}^1\times {\mathrm{859}}^1$

素因数の和:904

約数の個数: 80

約数和(自身を含む): 201498000

約数和(自身を除く): 119893000

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 125, 152, 190, 200, 250, 380, 475, 500, 625, 760, 859, 950, 1000, 1250, 1718, 1900, 2375, 2500, 3436, 3800, 4295, 4750, 5000, 6872, 8590, 9500, 11875, 16321, 17180, 19000, 21475, 23750, 32642, 34360, 42950, 47500, 65284, 81605, 85900, 95000, 107375, 130568, 163210, 171800, 214750, 326420, 408025, 429500, 536875, 652840, 816050, 859000, 1073750, 1632100, 2040125, 2147500, 3264200, 4080250, 4295000, 8160500, 10200625, 16321000, 20401250, 40802500, 81605000]

約数ペア:

[(1, 81605000), (2, 40802500), (4, 20401250), (5, 16321000), (8, 10200625), (10, 8160500), (19, 4295000), (20, 4080250), (25, 3264200), (38, 2147500), (40, 2040125), (50, 1632100), (76, 1073750), (95, 859000), (100, 816050), (125, 652840), (152, 536875), (190, 429500), (200, 408025), (250, 326420), (380, 214750), (475, 171800), (500, 163210), (625, 130568), (760, 107375), (859, 95000), (950, 85900), (1000, 81605), (1250, 65284), (1718, 47500), (1900, 42950), (2375, 34360), (2500, 32642), (3436, 23750), (3800, 21475), (4295, 19000), (4750, 17180), (5000, 16321), (6872, 11875), (8590, 9500)]