21579866

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{12739}}^1$

素因数の和:12770

約数の個数: 24

約数和(自身を含む): 40666080

約数和(自身を除く): 19086214

約数列:

[1, 2, 7, 11, 14, 22, 77, 121, 154, 242, 847, 1694, 12739, 25478, 89173, 140129, 178346, 280258, 980903, 1541419, 1961806, 3082838, 10789933, 21579866]

約数ペア:

[(1, 21579866), (2, 10789933), (7, 3082838), (11, 1961806), (14, 1541419), (22, 980903), (77, 280258), (121, 178346), (154, 140129), (242, 89173), (847, 25478), (1694, 12739)]