21346556

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{9901}}^1$

素因数の和:9930

約数の個数: 36

約数和(自身を含む): 47410776

約数和(自身を除く): 26064220

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 77, 98, 154, 196, 308, 539, 1078, 2156, 9901, 19802, 39604, 69307, 108911, 138614, 217822, 277228, 435644, 485149, 762377, 970298, 1524754, 1940596, 3049508, 5336639, 10673278, 21346556]

約数ペア:

[(1, 21346556), (2, 10673278), (4, 5336639), (7, 3049508), (11, 1940596), (14, 1524754), (22, 970298), (28, 762377), (44, 485149), (49, 435644), (77, 277228), (98, 217822), (154, 138614), (196, 108911), (308, 69307), (539, 39604), (1078, 19802), (2156, 9901)]