28280000

素因数分解:

$2^6\times 5^4\times 7^1\times {\mathrm{101}}^1$

素因数の和:140

約数の個数: 140

約数和(自身を含む): 80936592

約数和(自身を除く): 52656592

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 64, 70, 80, 100, 101, 112, 125, 140, 160, 175, 200, 202, 224, 250, 280, 320, 350, 400, 404, 448, 500, 505, 560, 625, 700, 707, 800, 808, 875, 1000, 1010, 1120, 1250, 1400, 1414, 1600, 1616, 1750, 2000, 2020, 2240, 2500, 2525, 2800, 2828, 3232, 3500, 3535, 4000, 4040, 4375, 5000, 5050, 5600, 5656, 6464, 7000, 7070, 8000, 8080, 8750, 10000, 10100, 11200, 11312, 12625, 14000, 14140, 16160, 17500, 17675, 20000, 20200, 22624, 25250, 28000, 28280, 32320, 35000, 35350, 40000, 40400, 45248, 50500, 56000, 56560, 63125, 70000, 70700, 80800, 88375, 101000, 113120, 126250, 140000, 141400, 161600, 176750, 202000, 226240, 252500, 280000, 282800, 353500, 404000, 441875, 505000, 565600, 707000, 808000, 883750, 1010000, 1131200, 1414000, 1767500, 2020000, 2828000, 3535000, 4040000, 5656000, 7070000, 14140000, 28280000]

約数ペア:

[(1, 28280000), (2, 14140000), (4, 7070000), (5, 5656000), (7, 4040000), (8, 3535000), (10, 2828000), (14, 2020000), (16, 1767500), (20, 1414000), (25, 1131200), (28, 1010000), (32, 883750), (35, 808000), (40, 707000), (50, 565600), (56, 505000), (64, 441875), (70, 404000), (80, 353500), (100, 282800), (101, 280000), (112, 252500), (125, 226240), (140, 202000), (160, 176750), (175, 161600), (200, 141400), (202, 140000), (224, 126250), (250, 113120), (280, 101000), (320, 88375), (350, 80800), (400, 70700), (404, 70000), (448, 63125), (500, 56560), (505, 56000), (560, 50500), (625, 45248), (700, 40400), (707, 40000), (800, 35350), (808, 35000), (875, 32320), (1000, 28280), (1010, 28000), (1120, 25250), (1250, 22624), (1400, 20200), (1414, 20000), (1600, 17675), (1616, 17500), (1750, 16160), (2000, 14140), (2020, 14000), (2240, 12625), (2500, 11312), (2525, 11200), (2800, 10100), (2828, 10000), (3232, 8750), (3500, 8080), (3535, 8000), (4000, 7070), (4040, 7000), (4375, 6464), (5000, 5656), (5050, 5600)]