18657020

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{7121}}^1$

素因数の和:7261

約数の個数: 24

約数和(自身を含む): 39484368

約数和(自身を除く): 20827348

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 7121, 14242, 28484, 35605, 71210, 142420, 932851, 1865702, 3731404, 4664255, 9328510, 18657020]

約数ペア:

[(1, 18657020), (2, 9328510), (4, 4664255), (5, 3731404), (10, 1865702), (20, 932851), (131, 142420), (262, 71210), (524, 35605), (655, 28484), (1310, 14242), (2620, 7121)]