18259821

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1627}}^1$

素因数の和:1705

約数の個数: 24

約数和(自身を含む): 27936480

約数和(自身を除く): 9676659

約数列:

[1, 3, 9, 29, 43, 87, 129, 261, 387, 1247, 1627, 3741, 4881, 11223, 14643, 47183, 69961, 141549, 209883, 424647, 629649, 2028869, 6086607, 18259821]

約数ペア:

[(1, 18259821), (3, 6086607), (9, 2028869), (29, 629649), (43, 424647), (87, 209883), (129, 141549), (261, 69961), (387, 47183), (1247, 14643), (1627, 11223), (3741, 4881)]