18812500

素因数分解:

$2^2\times 5^6\times 7^1\times {\mathrm{43}}^1$

素因数の和:84

約数の個数: 84

約数和(自身を含む): 48124384

約数和(自身を除く): 29311884

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 43, 50, 70, 86, 100, 125, 140, 172, 175, 215, 250, 301, 350, 430, 500, 602, 625, 700, 860, 875, 1075, 1204, 1250, 1505, 1750, 2150, 2500, 3010, 3125, 3500, 4300, 4375, 5375, 6020, 6250, 7525, 8750, 10750, 12500, 15050, 15625, 17500, 21500, 21875, 26875, 30100, 31250, 37625, 43750, 53750, 62500, 75250, 87500, 107500, 109375, 134375, 150500, 188125, 218750, 268750, 376250, 437500, 537500, 671875, 752500, 940625, 1343750, 1881250, 2687500, 3762500, 4703125, 9406250, 18812500]

約数ペア:

[(1, 18812500), (2, 9406250), (4, 4703125), (5, 3762500), (7, 2687500), (10, 1881250), (14, 1343750), (20, 940625), (25, 752500), (28, 671875), (35, 537500), (43, 437500), (50, 376250), (70, 268750), (86, 218750), (100, 188125), (125, 150500), (140, 134375), (172, 109375), (175, 107500), (215, 87500), (250, 75250), (301, 62500), (350, 53750), (430, 43750), (500, 37625), (602, 31250), (625, 30100), (700, 26875), (860, 21875), (875, 21500), (1075, 17500), (1204, 15625), (1250, 15050), (1505, 12500), (1750, 10750), (2150, 8750), (2500, 7525), (3010, 6250), (3125, 6020), (3500, 5375), (4300, 4375)]