21145537

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{4297}}^1$

素因数の和:4360

約数の個数: 16

約数和(自身を含む): 26131840

約数和(自身を除く): 4986303

約数列:

[1, 7, 19, 37, 133, 259, 703, 4297, 4921, 30079, 81643, 158989, 571501, 1112923, 3020791, 21145537]

約数ペア:

[(1, 21145537), (7, 3020791), (19, 1112923), (37, 571501), (133, 158989), (259, 81643), (703, 30079), (4297, 4921)]