20708144

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{18229}}^1$

素因数の和:18308

約数の個数: 20

約数和(自身を含む): 40689360

約数和(自身を除く): 19981216

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 18229, 36458, 72916, 145832, 291664, 1294259, 2588518, 5177036, 10354072, 20708144]

約数ペア:

[(1, 20708144), (2, 10354072), (4, 5177036), (8, 2588518), (16, 1294259), (71, 291664), (142, 145832), (284, 72916), (568, 36458), (1136, 18229)]