18121460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{129439}}^1$

素因数の和:129455

約数の個数: 24

約数和(自身を含む): 43491840

約数和(自身を除く): 25370380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 129439, 258878, 517756, 647195, 906073, 1294390, 1812146, 2588780, 3624292, 4530365, 9060730, 18121460]

約数ペア:

[(1, 18121460), (2, 9060730), (4, 4530365), (5, 3624292), (7, 2588780), (10, 1812146), (14, 1294390), (20, 906073), (28, 647195), (35, 517756), (70, 258878), (140, 129439)]