21081676

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{68447}}^1$

素因数の和:68469

約数の個数: 24

約数和(自身を含む): 45997056

約数和(自身を除く): 24915380

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 68447, 136894, 273788, 479129, 752917, 958258, 1505834, 1916516, 3011668, 5270419, 10540838, 21081676]

約数ペア:

[(1, 21081676), (2, 10540838), (4, 5270419), (7, 3011668), (11, 1916516), (14, 1505834), (22, 958258), (28, 752917), (44, 479129), (77, 273788), (154, 136894), (308, 68447)]