205989700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{2857}}^1$

素因数の和:2981

約数の個数: 72

約数和(自身を含む): 515994752

約数和(自身を除く): 310005052

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 103, 140, 175, 206, 350, 412, 515, 700, 721, 1030, 1442, 2060, 2575, 2857, 2884, 3605, 5150, 5714, 7210, 10300, 11428, 14285, 14420, 18025, 19999, 28570, 36050, 39998, 57140, 71425, 72100, 79996, 99995, 142850, 199990, 285700, 294271, 399980, 499975, 588542, 999950, 1177084, 1471355, 1999900, 2059897, 2942710, 4119794, 5885420, 7356775, 8239588, 10299485, 14713550, 20598970, 29427100, 41197940, 51497425, 102994850, 205989700]

約数ペア:

[(1, 205989700), (2, 102994850), (4, 51497425), (5, 41197940), (7, 29427100), (10, 20598970), (14, 14713550), (20, 10299485), (25, 8239588), (28, 7356775), (35, 5885420), (50, 4119794), (70, 2942710), (100, 2059897), (103, 1999900), (140, 1471355), (175, 1177084), (206, 999950), (350, 588542), (412, 499975), (515, 399980), (700, 294271), (721, 285700), (1030, 199990), (1442, 142850), (2060, 99995), (2575, 79996), (2857, 72100), (2884, 71425), (3605, 57140), (5150, 39998), (5714, 36050), (7210, 28570), (10300, 19999), (11428, 18025), (14285, 14420)]