20904519

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{4007}}^1$

素因数の和:4094

約数の個数: 16

約数和(自身を含む): 29242368

約数和(自身を除く): 8337849

約数列:

[1, 3, 37, 47, 111, 141, 1739, 4007, 5217, 12021, 148259, 188329, 444777, 564987, 6968173, 20904519]

約数ペア:

[(1, 20904519), (3, 6968173), (37, 564987), (47, 444777), (111, 188329), (141, 148259), (1739, 12021), (4007, 5217)]