201800000

素因数分解:

$2^6\times 5^5\times {\mathrm{1009}}^1$

素因数の和:1046

約数の個数: 84

約数和(自身を含む): 501022620

約数和(自身を除く): 299222620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 500, 625, 800, 1000, 1009, 1250, 1600, 2000, 2018, 2500, 3125, 4000, 4036, 5000, 5045, 6250, 8000, 8072, 10000, 10090, 12500, 16144, 20000, 20180, 25000, 25225, 32288, 40000, 40360, 50000, 50450, 64576, 80720, 100000, 100900, 126125, 161440, 200000, 201800, 252250, 322880, 403600, 504500, 630625, 807200, 1009000, 1261250, 1614400, 2018000, 2522500, 3153125, 4036000, 5045000, 6306250, 8072000, 10090000, 12612500, 20180000, 25225000, 40360000, 50450000, 100900000, 201800000]

約数ペア:

[(1, 201800000), (2, 100900000), (4, 50450000), (5, 40360000), (8, 25225000), (10, 20180000), (16, 12612500), (20, 10090000), (25, 8072000), (32, 6306250), (40, 5045000), (50, 4036000), (64, 3153125), (80, 2522500), (100, 2018000), (125, 1614400), (160, 1261250), (200, 1009000), (250, 807200), (320, 630625), (400, 504500), (500, 403600), (625, 322880), (800, 252250), (1000, 201800), (1009, 200000), (1250, 161440), (1600, 126125), (2000, 100900), (2018, 100000), (2500, 80720), (3125, 64576), (4000, 50450), (4036, 50000), (5000, 40360), (5045, 40000), (6250, 32288), (8000, 25225), (8072, 25000), (10000, 20180), (10090, 20000), (12500, 16144)]