19897905

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{78031}}^1$

素因数の和:78056

約数の個数: 16

約数和(自身を含む): 33709824

約数和(自身を除く): 13811919

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 78031, 234093, 390155, 1170465, 1326527, 3979581, 6632635, 19897905]

約数ペア:

[(1, 19897905), (3, 6632635), (5, 3979581), (15, 1326527), (17, 1170465), (51, 390155), (85, 234093), (255, 78031)]