212901815

素因数分解:

$5^1\times 7^3\times {\mathrm{43}}^1\times {\mathrm{2887}}^1$

素因数の和:2956

約数の個数: 32

約数和(自身を含む): 304972800

約数和(自身を除く): 92070985

約数列:

[1, 5, 7, 35, 43, 49, 215, 245, 301, 343, 1505, 1715, 2107, 2887, 10535, 14435, 14749, 20209, 73745, 101045, 124141, 141463, 620705, 707315, 868987, 990241, 4344935, 4951205, 6082909, 30414545, 42580363, 212901815]

約数ペア:

[(1, 212901815), (5, 42580363), (7, 30414545), (35, 6082909), (43, 4951205), (49, 4344935), (215, 990241), (245, 868987), (301, 707315), (343, 620705), (1505, 141463), (1715, 124141), (2107, 101045), (2887, 73745), (10535, 20209), (14435, 14749)]