28784912

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{138389}}^1$

素因数の和:138410

約数の個数: 20

約数和(自身を含む): 60061260

約数和(自身を除く): 31276348

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 138389, 276778, 553556, 1107112, 1799057, 2214224, 3598114, 7196228, 14392456, 28784912]

約数ペア:

[(1, 28784912), (2, 14392456), (4, 7196228), (8, 3598114), (13, 2214224), (16, 1799057), (26, 1107112), (52, 553556), (104, 276778), (208, 138389)]