18287780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{18661}}^1$

素因数の和:18684

約数の個数: 36

約数和(自身を含む): 44676828

約数和(自身を除く): 26389048

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 18661, 37322, 74644, 93305, 130627, 186610, 261254, 373220, 522508, 653135, 914389, 1306270, 1828778, 2612540, 3657556, 4571945, 9143890, 18287780]

約数ペア:

[(1, 18287780), (2, 9143890), (4, 4571945), (5, 3657556), (7, 2612540), (10, 1828778), (14, 1306270), (20, 914389), (28, 653135), (35, 522508), (49, 373220), (70, 261254), (98, 186610), (140, 130627), (196, 93305), (245, 74644), (490, 37322), (980, 18661)]