18154780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1259}}^1$

素因数の和:1378

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 25874660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 103, 140, 206, 412, 515, 721, 1030, 1259, 1442, 2060, 2518, 2884, 3605, 5036, 6295, 7210, 8813, 12590, 14420, 17626, 25180, 35252, 44065, 88130, 129677, 176260, 259354, 518708, 648385, 907739, 1296770, 1815478, 2593540, 3630956, 4538695, 9077390, 18154780]

約数ペア:

[(1, 18154780), (2, 9077390), (4, 4538695), (5, 3630956), (7, 2593540), (10, 1815478), (14, 1296770), (20, 907739), (28, 648385), (35, 518708), (70, 259354), (103, 176260), (140, 129677), (206, 88130), (412, 44065), (515, 35252), (721, 25180), (1030, 17626), (1259, 14420), (1442, 12590), (2060, 8813), (2518, 7210), (2884, 6295), (3605, 5036)]