21278418

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{506629}}^1$

素因数の和:506641

約数の個数: 16

約数和(自身を含む): 48636480

約数和(自身を除く): 27358062

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 506629, 1013258, 1519887, 3039774, 3546403, 7092806, 10639209, 21278418]

約数ペア:

[(1, 21278418), (2, 10639209), (3, 7092806), (6, 3546403), (7, 3039774), (14, 1519887), (21, 1013258), (42, 506629)]