20519686

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{199}}^1$

素因数の和:364

約数の個数: 32

約数和(自身を含む): 34848000

約数和(自身を除く): 14328314

約数列:

[1, 2, 11, 22, 43, 86, 109, 199, 218, 398, 473, 946, 1199, 2189, 2398, 4378, 4687, 8557, 9374, 17114, 21691, 43382, 51557, 94127, 103114, 188254, 238601, 477202, 932713, 1865426, 10259843, 20519686]

約数ペア:

[(1, 20519686), (2, 10259843), (11, 1865426), (22, 932713), (43, 477202), (86, 238601), (109, 188254), (199, 103114), (218, 94127), (398, 51557), (473, 43382), (946, 21691), (1199, 17114), (2189, 9374), (2398, 8557), (4378, 4687)]