28700000

素因数分解:

$2^5\times 5^5\times 7^1\times {\mathrm{41}}^1$

素因数の和:83

約数の個数: 144

約数和(自身を含む): 82682208

約数和(自身を除く): 53982208

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 41, 50, 56, 70, 80, 82, 100, 112, 125, 140, 160, 164, 175, 200, 205, 224, 250, 280, 287, 328, 350, 400, 410, 500, 560, 574, 625, 656, 700, 800, 820, 875, 1000, 1025, 1120, 1148, 1250, 1312, 1400, 1435, 1640, 1750, 2000, 2050, 2296, 2500, 2800, 2870, 3125, 3280, 3500, 4000, 4100, 4375, 4592, 5000, 5125, 5600, 5740, 6250, 6560, 7000, 7175, 8200, 8750, 9184, 10000, 10250, 11480, 12500, 14000, 14350, 16400, 17500, 20000, 20500, 21875, 22960, 25000, 25625, 28000, 28700, 32800, 35000, 35875, 41000, 43750, 45920, 50000, 51250, 57400, 70000, 71750, 82000, 87500, 100000, 102500, 114800, 128125, 140000, 143500, 164000, 175000, 179375, 205000, 229600, 256250, 287000, 350000, 358750, 410000, 512500, 574000, 700000, 717500, 820000, 896875, 1025000, 1148000, 1435000, 1793750, 2050000, 2870000, 3587500, 4100000, 5740000, 7175000, 14350000, 28700000]

約数ペア:

[(1, 28700000), (2, 14350000), (4, 7175000), (5, 5740000), (7, 4100000), (8, 3587500), (10, 2870000), (14, 2050000), (16, 1793750), (20, 1435000), (25, 1148000), (28, 1025000), (32, 896875), (35, 820000), (40, 717500), (41, 700000), (50, 574000), (56, 512500), (70, 410000), (80, 358750), (82, 350000), (100, 287000), (112, 256250), (125, 229600), (140, 205000), (160, 179375), (164, 175000), (175, 164000), (200, 143500), (205, 140000), (224, 128125), (250, 114800), (280, 102500), (287, 100000), (328, 87500), (350, 82000), (400, 71750), (410, 70000), (500, 57400), (560, 51250), (574, 50000), (625, 45920), (656, 43750), (700, 41000), (800, 35875), (820, 35000), (875, 32800), (1000, 28700), (1025, 28000), (1120, 25625), (1148, 25000), (1250, 22960), (1312, 21875), (1400, 20500), (1435, 20000), (1640, 17500), (1750, 16400), (2000, 14350), (2050, 14000), (2296, 12500), (2500, 11480), (2800, 10250), (2870, 10000), (3125, 9184), (3280, 8750), (3500, 8200), (4000, 7175), (4100, 7000), (4375, 6560), (4592, 6250), (5000, 5740), (5125, 5600)]