72100000

素因数分解:

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

素因数の和:145

約数の個数: 144

約数和(自身を含む): 204736896

約数和(自身を除く): 132636896

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 70, 80, 100, 103, 112, 125, 140, 160, 175, 200, 206, 224, 250, 280, 350, 400, 412, 500, 515, 560, 625, 700, 721, 800, 824, 875, 1000, 1030, 1120, 1250, 1400, 1442, 1648, 1750, 2000, 2060, 2500, 2575, 2800, 2884, 3125, 3296, 3500, 3605, 4000, 4120, 4375, 5000, 5150, 5600, 5768, 6250, 7000, 7210, 8240, 8750, 10000, 10300, 11536, 12500, 12875, 14000, 14420, 16480, 17500, 18025, 20000, 20600, 21875, 23072, 25000, 25750, 28000, 28840, 35000, 36050, 41200, 43750, 50000, 51500, 57680, 64375, 70000, 72100, 82400, 87500, 90125, 100000, 103000, 115360, 128750, 140000, 144200, 175000, 180250, 206000, 257500, 288400, 321875, 350000, 360500, 412000, 450625, 515000, 576800, 643750, 700000, 721000, 901250, 1030000, 1287500, 1442000, 1802500, 2060000, 2253125, 2575000, 2884000, 3605000, 4506250, 5150000, 7210000, 9012500, 10300000, 14420000, 18025000, 36050000, 72100000]

約数ペア:

[(1, 72100000), (2, 36050000), (4, 18025000), (5, 14420000), (7, 10300000), (8, 9012500), (10, 7210000), (14, 5150000), (16, 4506250), (20, 3605000), (25, 2884000), (28, 2575000), (32, 2253125), (35, 2060000), (40, 1802500), (50, 1442000), (56, 1287500), (70, 1030000), (80, 901250), (100, 721000), (103, 700000), (112, 643750), (125, 576800), (140, 515000), (160, 450625), (175, 412000), (200, 360500), (206, 350000), (224, 321875), (250, 288400), (280, 257500), (350, 206000), (400, 180250), (412, 175000), (500, 144200), (515, 140000), (560, 128750), (625, 115360), (700, 103000), (721, 100000), (800, 90125), (824, 87500), (875, 82400), (1000, 72100), (1030, 70000), (1120, 64375), (1250, 57680), (1400, 51500), (1442, 50000), (1648, 43750), (1750, 41200), (2000, 36050), (2060, 35000), (2500, 28840), (2575, 28000), (2800, 25750), (2884, 25000), (3125, 23072), (3296, 21875), (3500, 20600), (3605, 20000), (4000, 18025), (4120, 17500), (4375, 16480), (5000, 14420), (5150, 14000), (5600, 12875), (5768, 12500), (6250, 11536), (7000, 10300), (7210, 10000), (8240, 8750)]