21551971

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{2969}}^1$

素因数の和:3054

約数の個数: 16

約数和(自身を含む): 26516160

約数和(自身を除く): 4964189

約数列:

[1, 7, 17, 61, 119, 427, 1037, 2969, 7259, 20783, 50473, 181109, 353311, 1267763, 3078853, 21551971]

約数ペア:

[(1, 21551971), (7, 3078853), (17, 1267763), (61, 353311), (119, 181109), (427, 50473), (1037, 20783), (2969, 7259)]