19728568

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{145063}}^1$

素因数の和:145086

約数の個数: 16

約数和(自身を含む): 39167280

約数和(自身を除く): 19438712

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 145063, 290126, 580252, 1160504, 2466071, 4932142, 9864284, 19728568]

約数ペア:

[(1, 19728568), (2, 9864284), (4, 4932142), (8, 2466071), (17, 1160504), (34, 580252), (68, 290126), (136, 145063)]