20188000

素因数分解:

$2^5\times 5^3\times 7^2\times {\mathrm{103}}^1$

素因数の和:142

約数の個数: 144

約数和(自身を含む): 58260384

約数和(自身を除く): 38072384

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 49, 50, 56, 70, 80, 98, 100, 103, 112, 125, 140, 160, 175, 196, 200, 206, 224, 245, 250, 280, 350, 392, 400, 412, 490, 500, 515, 560, 700, 721, 784, 800, 824, 875, 980, 1000, 1030, 1120, 1225, 1400, 1442, 1568, 1648, 1750, 1960, 2000, 2060, 2450, 2575, 2800, 2884, 3296, 3500, 3605, 3920, 4000, 4120, 4900, 5047, 5150, 5600, 5768, 6125, 7000, 7210, 7840, 8240, 9800, 10094, 10300, 11536, 12250, 12875, 14000, 14420, 16480, 18025, 19600, 20188, 20600, 23072, 24500, 25235, 25750, 28000, 28840, 36050, 39200, 40376, 41200, 49000, 50470, 51500, 57680, 72100, 80752, 82400, 90125, 98000, 100940, 103000, 115360, 126175, 144200, 161504, 180250, 196000, 201880, 206000, 252350, 288400, 360500, 403760, 412000, 504700, 576800, 630875, 721000, 807520, 1009400, 1261750, 1442000, 2018800, 2523500, 2884000, 4037600, 5047000, 10094000, 20188000]

約数ペア:

[(1, 20188000), (2, 10094000), (4, 5047000), (5, 4037600), (7, 2884000), (8, 2523500), (10, 2018800), (14, 1442000), (16, 1261750), (20, 1009400), (25, 807520), (28, 721000), (32, 630875), (35, 576800), (40, 504700), (49, 412000), (50, 403760), (56, 360500), (70, 288400), (80, 252350), (98, 206000), (100, 201880), (103, 196000), (112, 180250), (125, 161504), (140, 144200), (160, 126175), (175, 115360), (196, 103000), (200, 100940), (206, 98000), (224, 90125), (245, 82400), (250, 80752), (280, 72100), (350, 57680), (392, 51500), (400, 50470), (412, 49000), (490, 41200), (500, 40376), (515, 39200), (560, 36050), (700, 28840), (721, 28000), (784, 25750), (800, 25235), (824, 24500), (875, 23072), (980, 20600), (1000, 20188), (1030, 19600), (1120, 18025), (1225, 16480), (1400, 14420), (1442, 14000), (1568, 12875), (1648, 12250), (1750, 11536), (1960, 10300), (2000, 10094), (2060, 9800), (2450, 8240), (2575, 7840), (2800, 7210), (2884, 7000), (3296, 6125), (3500, 5768), (3605, 5600), (3920, 5150), (4000, 5047), (4120, 4900)]