20604941

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1$

素因数の和:473

約数の個数: 24

約数和(自身を含む): 25608960

約数和(自身を除く): 5004019

約数列:

[1, 7, 23, 47, 49, 161, 329, 389, 1081, 1127, 2303, 2723, 7567, 8947, 18283, 19061, 52969, 62629, 127981, 420509, 438403, 895867, 2943563, 20604941]

約数ペア:

[(1, 20604941), (7, 2943563), (23, 895867), (47, 438403), (49, 420509), (161, 127981), (329, 62629), (389, 52969), (1081, 19061), (1127, 18283), (2303, 8947), (2723, 7567)]