21315478

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{4057}}^1$

素因数の和:4167

約数の個数: 16

約数和(自身を含む): 33308064

約数和(自身を除く): 11992586

約数列:

[1, 2, 37, 71, 74, 142, 2627, 4057, 5254, 8114, 150109, 288047, 300218, 576094, 10657739, 21315478]

約数ペア:

[(1, 21315478), (2, 10657739), (37, 576094), (71, 300218), (74, 288047), (142, 150109), (2627, 8114), (4057, 5254)]