20987989

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{733}}^1$

素因数の和:900

約数の個数: 16

約数和(自身を含む): 24310080

約数和(自身を除く): 3322091

約数列:

[1, 11, 19, 137, 209, 733, 1507, 2603, 8063, 13927, 28633, 100421, 153197, 1104631, 1907999, 20987989]

約数ペア:

[(1, 20987989), (11, 1907999), (19, 1104631), (137, 153197), (209, 100421), (733, 28633), (1507, 13927), (2603, 8063)]