81590000

素因数分解:

$2^4\times 5^4\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:268

約数の個数: 100

約数和(自身を含む): 203372400

約数和(自身を除く): 121782400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 41, 50, 80, 82, 100, 125, 164, 199, 200, 205, 250, 328, 398, 400, 410, 500, 625, 656, 796, 820, 995, 1000, 1025, 1250, 1592, 1640, 1990, 2000, 2050, 2500, 3184, 3280, 3980, 4100, 4975, 5000, 5125, 7960, 8159, 8200, 9950, 10000, 10250, 15920, 16318, 16400, 19900, 20500, 24875, 25625, 32636, 39800, 40795, 41000, 49750, 51250, 65272, 79600, 81590, 82000, 99500, 102500, 124375, 130544, 163180, 199000, 203975, 205000, 248750, 326360, 398000, 407950, 410000, 497500, 652720, 815900, 995000, 1019875, 1631800, 1990000, 2039750, 3263600, 4079500, 5099375, 8159000, 10198750, 16318000, 20397500, 40795000, 81590000]

約数ペア:

[(1, 81590000), (2, 40795000), (4, 20397500), (5, 16318000), (8, 10198750), (10, 8159000), (16, 5099375), (20, 4079500), (25, 3263600), (40, 2039750), (41, 1990000), (50, 1631800), (80, 1019875), (82, 995000), (100, 815900), (125, 652720), (164, 497500), (199, 410000), (200, 407950), (205, 398000), (250, 326360), (328, 248750), (398, 205000), (400, 203975), (410, 199000), (500, 163180), (625, 130544), (656, 124375), (796, 102500), (820, 99500), (995, 82000), (1000, 81590), (1025, 79600), (1250, 65272), (1592, 51250), (1640, 49750), (1990, 41000), (2000, 40795), (2050, 39800), (2500, 32636), (3184, 25625), (3280, 24875), (3980, 20500), (4100, 19900), (4975, 16400), (5000, 16318), (5125, 15920), (7960, 10250), (8159, 10000), (8200, 9950)]