18025000

素因数分解:

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

素因数の和:141

約数の個数: 96

約数和(自身を含む): 48746880

約数和(自身を除く): 30721880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 103, 125, 140, 175, 200, 206, 250, 280, 350, 412, 500, 515, 625, 700, 721, 824, 875, 1000, 1030, 1250, 1400, 1442, 1750, 2060, 2500, 2575, 2884, 3125, 3500, 3605, 4120, 4375, 5000, 5150, 5768, 6250, 7000, 7210, 8750, 10300, 12500, 12875, 14420, 17500, 18025, 20600, 21875, 25000, 25750, 28840, 35000, 36050, 43750, 51500, 64375, 72100, 87500, 90125, 103000, 128750, 144200, 175000, 180250, 257500, 321875, 360500, 450625, 515000, 643750, 721000, 901250, 1287500, 1802500, 2253125, 2575000, 3605000, 4506250, 9012500, 18025000]

約数ペア:

[(1, 18025000), (2, 9012500), (4, 4506250), (5, 3605000), (7, 2575000), (8, 2253125), (10, 1802500), (14, 1287500), (20, 901250), (25, 721000), (28, 643750), (35, 515000), (40, 450625), (50, 360500), (56, 321875), (70, 257500), (100, 180250), (103, 175000), (125, 144200), (140, 128750), (175, 103000), (200, 90125), (206, 87500), (250, 72100), (280, 64375), (350, 51500), (412, 43750), (500, 36050), (515, 35000), (625, 28840), (700, 25750), (721, 25000), (824, 21875), (875, 20600), (1000, 18025), (1030, 17500), (1250, 14420), (1400, 12875), (1442, 12500), (1750, 10300), (2060, 8750), (2500, 7210), (2575, 7000), (2884, 6250), (3125, 5768), (3500, 5150), (3605, 5000), (4120, 4375)]