805000

素因数分解:

$2^3\times 5^4\times 7^1\times {\mathrm{23}}^1$

素因数の和:56

約数の個数: 80

約数和(自身を含む): 2249280

約数和(自身を除く): 1444280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 25, 28, 35, 40, 46, 50, 56, 70, 92, 100, 115, 125, 140, 161, 175, 184, 200, 230, 250, 280, 322, 350, 460, 500, 575, 625, 644, 700, 805, 875, 920, 1000, 1150, 1250, 1288, 1400, 1610, 1750, 2300, 2500, 2875, 3220, 3500, 4025, 4375, 4600, 5000, 5750, 6440, 7000, 8050, 8750, 11500, 14375, 16100, 17500, 20125, 23000, 28750, 32200, 35000, 40250, 57500, 80500, 100625, 115000, 161000, 201250, 402500, 805000]

約数ペア:

[(1, 805000), (2, 402500), (4, 201250), (5, 161000), (7, 115000), (8, 100625), (10, 80500), (14, 57500), (20, 40250), (23, 35000), (25, 32200), (28, 28750), (35, 23000), (40, 20125), (46, 17500), (50, 16100), (56, 14375), (70, 11500), (92, 8750), (100, 8050), (115, 7000), (125, 6440), (140, 5750), (161, 5000), (175, 4600), (184, 4375), (200, 4025), (230, 3500), (250, 3220), (280, 2875), (322, 2500), (350, 2300), (460, 1750), (500, 1610), (575, 1400), (625, 1288), (644, 1250), (700, 1150), (805, 1000), (875, 920)]