21516424

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{158209}}^1$

素因数の和:158232

約数の個数: 16

約数和(自身を含む): 42716700

約数和(自身を除く): 21200276

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 158209, 316418, 632836, 1265672, 2689553, 5379106, 10758212, 21516424]

約数ペア:

[(1, 21516424), (2, 10758212), (4, 5379106), (8, 2689553), (17, 1265672), (34, 632836), (68, 316418), (136, 158209)]