31405640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{112163}}^1$

素因数の和:112181

約数の個数: 32

約数和(自身を含む): 80758080

約数和(自身を除く): 49352440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 112163, 224326, 448652, 560815, 785141, 897304, 1121630, 1570282, 2243260, 3140564, 3925705, 4486520, 6281128, 7851410, 15702820, 31405640]

約数ペア:

[(1, 31405640), (2, 15702820), (4, 7851410), (5, 6281128), (7, 4486520), (8, 3925705), (10, 3140564), (14, 2243260), (20, 1570282), (28, 1121630), (35, 897304), (40, 785141), (56, 560815), (70, 448652), (140, 224326), (280, 112163)]