21243838

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{137947}}^1$

素因数の和:137967

約数の個数: 16

約数和(自身を含む): 39729024

約数和(自身を除く): 18485186

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 137947, 275894, 965629, 1517417, 1931258, 3034834, 10621919, 21243838]

約数ペア:

[(1, 21243838), (2, 10621919), (7, 3034834), (11, 1931258), (14, 1517417), (22, 965629), (77, 275894), (154, 137947)]