20944899

素因数分解:

$3^7\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:239

約数の個数: 32

約数和(自身を含む): 32130880

約数和(自身を除く): 11185981

約数列:

[1, 3, 9, 27, 61, 81, 157, 183, 243, 471, 549, 729, 1413, 1647, 2187, 4239, 4941, 9577, 12717, 14823, 28731, 38151, 44469, 86193, 114453, 133407, 258579, 343359, 775737, 2327211, 6981633, 20944899]

約数ペア:

[(1, 20944899), (3, 6981633), (9, 2327211), (27, 775737), (61, 343359), (81, 258579), (157, 133407), (183, 114453), (243, 86193), (471, 44469), (549, 38151), (729, 28731), (1413, 14823), (1647, 12717), (2187, 9577), (4239, 4941)]