21387212

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{69439}}^1$

素因数の和:69461

約数の個数: 24

約数和(自身を含む): 46663680

約数和(自身を除く): 25276468

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 69439, 138878, 277756, 486073, 763829, 972146, 1527658, 1944292, 3055316, 5346803, 10693606, 21387212]

約数ペア:

[(1, 21387212), (2, 10693606), (4, 5346803), (7, 3055316), (11, 1944292), (14, 1527658), (22, 972146), (28, 763829), (44, 486073), (77, 277756), (154, 138878), (308, 69439)]