20905402

素因数分解:

$2^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{9161}}^1$

素因数の和:9333

約数の個数: 16

約数和(自身を含む): 36061632

約数和(自身を除く): 15156230

約数列:

[1, 2, 7, 14, 163, 326, 1141, 2282, 9161, 18322, 64127, 128254, 1493243, 2986486, 10452701, 20905402]

約数ペア:

[(1, 20905402), (2, 10452701), (7, 2986486), (14, 1493243), (163, 128254), (326, 64127), (1141, 18322), (2282, 9161)]