19938705

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{78191}}^1$

素因数の和:78216

約数の個数: 16

約数和(自身を含む): 33778944

約数和(自身を除く): 13840239

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 78191, 234573, 390955, 1172865, 1329247, 3987741, 6646235, 19938705]

約数ペア:

[(1, 19938705), (3, 6646235), (5, 3987741), (15, 1329247), (17, 1172865), (51, 390955), (85, 234573), (255, 78191)]