19871690

素因数分解:

$2^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{15647}}^1$

素因数の和:15781

約数の個数: 16

約数和(自身を含む): 36052992

約数和(自身を除く): 16181302

約数列:

[1, 2, 5, 10, 127, 254, 635, 1270, 15647, 31294, 78235, 156470, 1987169, 3974338, 9935845, 19871690]

約数ペア:

[(1, 19871690), (2, 9935845), (5, 3974338), (10, 1987169), (127, 156470), (254, 78235), (635, 31294), (1270, 15647)]