21840878

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{4157}}^1$

素因数の和:4267

約数の個数: 16

約数和(自身を含む): 34128864

約数和(自身を除く): 12287986

約数列:

[1, 2, 37, 71, 74, 142, 2627, 4157, 5254, 8314, 153809, 295147, 307618, 590294, 10920439, 21840878]

約数ペア:

[(1, 21840878), (2, 10920439), (37, 590294), (71, 307618), (74, 295147), (142, 153809), (2627, 8314), (4157, 5254)]