21695212

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{70439}}^1$

素因数の和:70461

約数の個数: 24

約数和(自身を含む): 47335680

約数和(自身を除く): 25640468

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 70439, 140878, 281756, 493073, 774829, 986146, 1549658, 1972292, 3099316, 5423803, 10847606, 21695212]

約数ペア:

[(1, 21695212), (2, 10847606), (4, 5423803), (7, 3099316), (11, 1972292), (14, 1549658), (22, 986146), (28, 774829), (44, 493073), (77, 281756), (154, 140878), (308, 70439)]