81355000

素因数分解:

$2^3\times 5^4\times {\mathrm{53}}^1\times {\mathrm{307}}^1$

素因数の和:386

約数の個数: 80

約数和(自身を含む): 194843880

約数和(自身を除く): 113488880

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 53, 100, 106, 125, 200, 212, 250, 265, 307, 424, 500, 530, 614, 625, 1000, 1060, 1228, 1250, 1325, 1535, 2120, 2456, 2500, 2650, 3070, 5000, 5300, 6140, 6625, 7675, 10600, 12280, 13250, 15350, 16271, 26500, 30700, 32542, 33125, 38375, 53000, 61400, 65084, 66250, 76750, 81355, 130168, 132500, 153500, 162710, 191875, 265000, 307000, 325420, 383750, 406775, 650840, 767500, 813550, 1535000, 1627100, 2033875, 3254200, 4067750, 8135500, 10169375, 16271000, 20338750, 40677500, 81355000]

約数ペア:

[(1, 81355000), (2, 40677500), (4, 20338750), (5, 16271000), (8, 10169375), (10, 8135500), (20, 4067750), (25, 3254200), (40, 2033875), (50, 1627100), (53, 1535000), (100, 813550), (106, 767500), (125, 650840), (200, 406775), (212, 383750), (250, 325420), (265, 307000), (307, 265000), (424, 191875), (500, 162710), (530, 153500), (614, 132500), (625, 130168), (1000, 81355), (1060, 76750), (1228, 66250), (1250, 65084), (1325, 61400), (1535, 53000), (2120, 38375), (2456, 33125), (2500, 32542), (2650, 30700), (3070, 26500), (5000, 16271), (5300, 15350), (6140, 13250), (6625, 12280), (7675, 10600)]