19801647

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{521}}^1$

素因数の和:671

約数の個数: 24

約数和(自身を含む): 29641248

約数和(自身を除く): 9839601

約数列:

[1, 3, 9, 41, 103, 123, 309, 369, 521, 927, 1563, 4223, 4689, 12669, 21361, 38007, 53663, 64083, 160989, 192249, 482967, 2200183, 6600549, 19801647]

約数ペア:

[(1, 19801647), (3, 6600549), (9, 2200183), (41, 482967), (103, 192249), (123, 160989), (309, 64083), (369, 53663), (521, 38007), (927, 21361), (1563, 12669), (4223, 4689)]