21005918

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{5101}}^1$

素因数の和:5203

約数の個数: 16

約数和(自身を含む): 33060960

約数和(自身を除く): 12055042

約数列:

[1, 2, 29, 58, 71, 142, 2059, 4118, 5101, 10202, 147929, 295858, 362171, 724342, 10502959, 21005918]

約数ペア:

[(1, 21005918), (2, 10502959), (29, 724342), (58, 362171), (71, 295858), (142, 147929), (2059, 10202), (4118, 5101)]