17987921

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{2129}}^1$

素因数の和:2224

約数の個数: 16

約数和(自身を含む): 22083840

約数和(自身を除く): 4095919

約数列:

[1, 7, 17, 71, 119, 497, 1207, 2129, 8449, 14903, 36193, 151159, 253351, 1058113, 2569703, 17987921]

約数ペア:

[(1, 17987921), (7, 2569703), (17, 1058113), (71, 253351), (119, 151159), (497, 36193), (1207, 14903), (2129, 8449)]